Ecosystems change overtime especially after disturbances, as new species move in: a. populations change & some die out
What is the Ecosystems?Ecosystems possess the trait of being ever-changing and can undergo transformations post calamities such as natural phenomena, expunging human activities, or the addition of novel species.
With the arrival of new species, alterations in populations can occur, leading to a predicament where certain species may not be able to adapt to the new surroundings and eventually become extinct. The process of ecological succession, which could take years, decades or centuries, is when various stages of plant and animal development take place within an ecosystem.
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Which process initially provides the link between an abiotic factor and the energy needs of an entire ecosystem?
1. respiration
2. photosynthesis
3. decomposition
4. predation
The process that initially provides the link between an abiotic factor and the energy needs of an entire ecosystem is photosynthesis. The correct option is 2
What is Photosynthesis ?
Green plants, algae, and some microorganisms transform solar energy into chemical energy in the form of organic molecules like glucose through a process known as photosynthesis. Using sunshine, carbon dioxide, and water, which serve as the building blocks of the entire food chain in an ecosystem, this approach enables producers to make their own food.
Predation in which animals eat other animals or plants, is how the energy contained in the organic molecules created by photosynthesis is then passed to the ecosystem's consumers.
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Can someone help me in the lab field of view
Figure A: Length of one cell = 1.67 mm/cell
Figure B: Length of one cell = 1.25 mm/cell
Figure C: Length of one cell = 5.0
Figure D: Length of one cell = 2.50 mm/cell
The diameter of ONE onion cell is 3.7 mm
What is the length of one cell?To determine the length of one cell, we divide the number of cells that span the diameter of the field of view by the diameter of the field of view .
For instance, if you anticipate that 50 cells set end to end would cross a 5 mm diameter field, then 5 mm/50 cells equal 0.1 mm/cell.
Given the image above:
Figure A:
Length of one cell = 5.0 mm / 3 cells
Length of one cell = 1.67 mm/cell
Figure B:
Length of one cell = 5.0 mm / 4 cells
Length of one cell = 1.25 mm/cell
Figure C:
Length of one cell = 5.0 mm / 1 cell
Length of one cell = 5.0
Figure D:
Length of one cell = 5.0 mm / 2 cells
Length of one cell = 2.50 mm/cell
The diameter of ONE onion cell shown using the following microscope drawing where e diameter of the field of view is 3.7 mm on low power will be:
Diameter = 3.7 mm/ 1 cell
Diameter = 3.7 mm
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True or false organisms use energy to make and digest food
Which of the following statements is true of scientific theories? A theory is a detailed explanation of why something occurs. A theory is a detailed description of how something occurs. None of the these. A theory is an explanation of what a scientist thinks might be correct.
A scientific theory is a descriptive explanation based on facts and evidences obtained through experiments and observations. Thus, the correct option is A.
The aim of a scientific theory is to explain laws regarding certain patterns or regularities which are both observed and suggested in a rational manner.
Scientific theories give an explanation on how or why something happens, which is not based on anyone's opinion or thoughts, but only on scientific evidences. These theories are testable and always applicable.
It also helps scientists to predict further observations or results based on these scientific theories.
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And the scientist who have contributed to our current body of knowledge, were from what part of the world
Scientists who have contributed to our current body of knowledge come from various parts of the world. Scientific advancements and discoveries have been made by individuals from diverse geographical locations and cultural backgrounds.
Throughout history, scientists from Europe have made significant contributions to various fields of science.
For example, renowned scientists like Isaac Newton, Albert Einstein, Marie Curie, and Charles Darwin, among many others, have shaped our understanding of physics, chemistry, and biology.
Europe has been a hub for scientific institutions and universities, fostering scientific inquiry and research.
However, it is important to note that scientific contributions have also been made by scientists from other regions.
Scientists from North America, such as Benjamin Franklin, Thomas Edison, and Rosalind Franklin, have made groundbreaking discoveries in electricity, invention, and DNA structure, respectively.
Similarly, scientists from Asia, such as Marie Maynard Daly, Subrahmanyan Chandrasekhar, and Tu Youyou, have made significant contributions to the fields of biochemistry, astrophysics, and medicine.
In recent times, scientists from all around the world, including Africa, South America, and Oceania, have been actively involved in scientific research and contributing to various disciplines.
Science is a global enterprise that thrives on the collaboration and contributions of scientists from diverse backgrounds, regardless of their geographic origin.
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Suppose a sudden extended cold spell destroys almost the entire
predator population at point F on the graph. Predict how the next cycle of the prey
population would appear on the graph.
If a sudden extended cold spell destroys almost the entire predator population at point F on the graph, it would lead to a significant decrease in predation pressure on the prey population.
As a result, the prey population would likely experience a rapid increase in numbers. Without the presence of predators to control their population, the prey population would have less pressure on their resources and face reduced mortality rates.
Consequently, the graph representing the prey population would show a steep upward trend, indicating a surge in population size. This increase would continue until a new equilibrium is reached, potentially leading to a subsequent increase in the predator population as their food source becomes more abundant.
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PLEASE HELP DESPERATE
Materials
"Ocean Currents" worksheet
paper and drawing materials or digital drawing program
Ocean Currents
An ocean current is a constant flow of water along a path in the ocean. If the current is close to the surface, it is called a surface current. Ocean currents can have a great effect on the planet, influencing weather patterns and affecting wildlife. Today, you are going to get the chance to map out these surface currents and analyze your results. Read all of the directions carefully before you begin.
Directions
Draw the ocean surface currents on this map using digital or physical drawing tools.
Locate the following on your worksheet.
Two major surface currents in the Atlantic Ocean (one in each hemisphere)
Two major surface currents in the Pacific Ocean (one in each hemisphere)
One major surface current in the Indian Ocean
Draw and label each of these major currents according to the following guidelines:
A directional arrow must show the direction of the flow of each current.
Label each current with the correct name.
Cold currents must be represented by blue arrows and blue-text labeling.
Warm currents must be represented by red arrows and red-text labeling.
Once you have diagrammed the surface currents, answer each of the conclusion questions.
(PLEASE ANSWER ALL QUESTIONS AND DRAW THE OCEAN SURFACE CURRENTS ON THE MAP)
Ocean currents are caused by a variety of factors, including wind, temperature, salinity, and the Earth's rotation. These factors affect the movement of water in the ocean, creating currents that flow in a particular direction.
How to explain the informationOcean currents are important because they help regulate the Earth's climate by distributing heat around the planet. They also affect weather patterns, nutrient distribution, and the migration patterns of marine life.
Ocean currents affect marine life by transporting nutrients and food sources to different areas of the ocean, which can impact the distribution and behavior of marine organisms. They also affect the migration patterns of marine animals, such as whales and sea turtles, as well as the dispersal of planktonic larvae.
Changes in ocean currents can have significant impacts on the planet, including altering weather patterns, sea levels, and the distribution of marine life.
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if a population contains 29% homozygous recessives, what percentage of heterozygotes would you expect
50% of Population is heterozygotes
Assuming that the population is in Hardy-Weinberg equilibrium, we can use the Hardy-Weinberg equation to calculate the expected frequencies of each genotype in the population.
The Hardy-Weinberg equation states that the frequency of the homozygous dominant genotype (AA) is [tex]p^{2}[/tex], the frequency of the heterozygous genotype (Aa) is 2pq, and the frequency of the homozygous recessive genotype (aa) is [tex]q^{2}[/tex], where p and q are the frequencies of the two alleles in the population and p + q = 1.
In this case, we know the frequency of the homozygous recessive genotype (aa) is 0.29. We can use this information to solve for q, which is the frequency of the recessive allele.
[tex]q^{2}[/tex] = 0.29
q = sqrt(0.29) ≈ 0.54
Next, we can use the fact that p + q = 1 to solve for p, which is the frequency of the dominant allele.
p = 1 - q
p = 1 - 0.54
p ≈ 0.46
Finally, we can use the equation 2pq to calculate the frequency of heterozygotes in the population.
2pq = 2(0.46)(0.54) ≈ 0.50
Therefore, we would expect approximately 50% of the population to be heterozygotes.
It is important to note that deviations from the expected frequencies could indicate factors such as natural selection, genetic drift, migration, or mutation, which could be influencing the population's genetic makeup.
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Ava lives alone in a small apartment. She likes to make herself stir fry with broccoli about once a week. Ava sometimes shops at the corner store, at her local grocery store, and at a large box store. When it comes to picking out broccoli for her stir fry, there are several options. Considering her desire to conserve the Earth’s resources, which would be the BEST choice for Ava?
A.
12 oz bag for $4.99
B.
24 oz bag for $6.27
C.
40 oz bag for $9.95
D.
64 oz bag for $12.53
Answer:
When conserving Earth's resources, Ava should buy what cost the least for an ounce.
Explanation:
Option D because it costs the least for an ounce.
James is a scientist who is working on finding an answer to a question about solar eclipses; however, he doe
have enough time or data to test all the possible answers to his question. Based on this, James is using spe
studies and calculations in an effort to find answers that are close to, or an approximation of, a correct answe
are these approximation answers that James is looking for called?
O
intervals
O
astrometry
O
estimation
clusters
Answer:
The approximation answers that James is looking for are called "estimation".
Explanation:
Estimation involves using limited information and data to approximate a value or answer that is close to the correct answer. In James' case, he is using specialized studies and calculations to estimate an answer to his question about solar eclipses since he does not have enough time or data to test all possible answers.
What did mendel’s cross -pollination of a pea plants prove
Answer: Mendel's cross-pollination of pea plants proved that when two separate plants are cross-pollinated, their genes are passed to their offspring. Some traits are inherited and some are not. Each attribute is inherited independently. Some traits are dominant and some are recessive.
Explanation:
Mendel's cross-pollination experiment showed after cross-pollination, some traits inherited by the offspring were dominant and some were not which were recessive. He explained that traits are determined by the genes present in the organisms.
For example, a plant that is small does not guarantee that the offspring should also be small. A recessive gene needs two copies to be inherited in the offspring and the dominant will be present even if there was only one copy.
So Mendel's experiment showed how traits are inherited in the offspring. These traits are inherited independently of each other. And also explains how different traits appear in offspring.
explain four legal actions that the community can take to make the municipality aware of their dissatisfaction regarding services delivery
1. Formal complaints: Community members can file a complaint with the municipality, describing their specific complaints and concerns about service delivery. This creates a written record of dissatisfaction and places the responsibility of addressing the issues raised on the city.
2. Contact community representatives: Community members can voice their dissatisfaction directly to their elected representatives or councillors. By sharing their concerns and asking for their help, they can use their influence and advocacy on behalf of the community.
3. Public forums and meetings: Participating in public forums and meetings organized by the municipality gives community members the opportunity to openly express their dissatisfaction. By actively participating and sharing their experiences, they can raise awareness and encourage cities to take action.
4. Community Working Groups: By forming or joining community working groups, communities can collaborate and collectively address service delivery issues. These groups can perform tasks such as holding meetings, conducting surveys, and providing a unified voice for the city, making it more likely that their concerns will be heard and addressed
What can consumers do to convince companies to produce quality goods that last a long time, rather than using poorly made or nondurable goods?
Consumers play a crucial role in shaping the market demand for goods and services. Companies often prioritize their bottom line and may cut corners in quality to increase profits. However, if consumers demand products that are made to last, companies may be incentivized to produce higher quality goods.
Here are some steps that consumers can take to convince companies to produce quality goods that last a long time:
Choose quality products: Consumers can choose to purchase products that are known for their durability and longevity. This can send a message to companies that consumers value quality over quantity.
Research products: Consumers can research products before buying them to learn about their durability and performance. They can read reviews, ask friends and family for recommendations, and look for independent third-party ratings.
Make complaints: Consumers can voice their dissatisfaction with poor quality products and complain to the company. This can create pressure on the company to address the issue and improve their product.
Support sustainable companies: Consumers can support companies that prioritize sustainability and social responsibility. These companies are often more likely to produce high-quality products that are made to last.
Spread the word: Consumers can share their positive experiences with durable and long-lasting products on social media or through word-of-mouth. This can encourage others to make similar choices and create a ripple effect in the market.
In summary, consumers can take steps to influence companies to produce quality goods that last a long time by choosing quality products, researching before buying, making complaints, supporting sustainable companies, and spreading the word about positive experiences .
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CER: CLAIM-EVIDENCE-REASONING
Question: How does the amount of global carbon emissions
affect the occurrence of global extreme weather catastrophes?
Background research :
The sun radiates light energy to Earth which then radiates it back as heat. Some heat is trapped by our atmosphere, helping to warm our planet. However, due to human activities, greenhouse gasses (carbon dioxide, methane, nitrous oxides, etc.) have been increasing and thickening our atmosphere, leading to global temperatures rising rapidly. The main cause is burning fossil fuels, especially coal, for electricity. Rising heat in the oceans are causing ocean-based storms (hurricanes, typhoons, cyclones) to be stronger.
The amount of global carbon emissions has a direct impact on the occurrence of global extreme weather catastrophes. As more and more greenhouse gases are released into the atmosphere, they thicken and trap more heat, which leads to a rapid increase in global temperatures.
This increase in temperature has a significant effect on the oceans, causing ocean-based storms like hurricanes, typhoons, and cyclones to be stronger and more frequent. To understand this phenomenon, we can use the CER (Claim-Evidence-Reasoning) framework.
The claim is that the amount of global carbon emissions affects the occurrence of extreme weather catastrophes. The evidence is that greenhouse gases like carbon dioxide, methane, and nitrous oxides have been thickening our atmosphere, leading to a rise in global temperatures. This rise in temperature is causing stronger and more frequent ocean-based storms.
The reasoning behind this is that when the Earth's atmosphere thickens with greenhouse gases, it traps more heat and leads to a rise in global temperatures. This rise in temperature has a direct impact on the oceans, causing ocean-based storms to become stronger and more frequent. Therefore, reducing global carbon emissions is essential to mitigate the occurrence of global extreme weather catastrophes.
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In which order does the process of neuro transmission events occur?
A) electrical impulse reaching the presynaptic neurons
B) excitation of postsynaptic on the neuron
C) release of Neurotransmitters from presynaptic neuron
D) binding of neurotransmitters to receptors
E) diffusion of neurotransmitters in the postsynaptic neuron
F) removal and destruction of neurotransmitters
The correct order of the process of neurotransmission events is as follows:
A) Electrical impulse reaching the presynaptic neuron
C) Release of neurotransmitters from the presynaptic neuron
D) Binding of neurotransmitters to receptors on the postsynaptic neuron
B) Excitation of the postsynaptic neuron
E) Diffusion of neurotransmitters in the postsynaptic neuron
F) Removal and destruction of neurotransmitters
The process begins with an electrical impulse, also known as an action potential, reaching the presynaptic neuron.
This electrical impulse triggers the release of neurotransmitters from vesicles in the presynaptic neuron (C).
The released neurotransmitters then cross the synaptic cleft and bind to specific receptors on the postsynaptic neuron (D).
This binding of neurotransmitters to receptors causes a change in the postsynaptic neuron's membrane potential, leading to its excitation (B).
After the neurotransmitters have served their purpose, they undergo diffusion in the postsynaptic neuron (E).
This diffusion allows the neurotransmitters to move away from the receptors and be cleared from the synaptic cleft.
Finally, the neurotransmitters are either taken back up into the presynaptic neuron for recycling or broken down and destroyed (F).
Overall, this sequence of events ensures the transmission of signals from one neuron to another in the nervous system.
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what do the bacteria that cause staph infections (like acne) and strep infections (like strep throat) have in common
The bacteria that cause staph infections (like acne) and strep infections (like strep throat) have in common that they are both Gram-positive bacteria belonging to the phylum Firmicutes.
The bacteria that cause staph infections (such as acne) and strep infections (like strep throat) share a few common characteristics.
Firstly, both Staphylococcus and Streptococcus bacteria are Gram-positive bacteria, meaning they have a thick cell wall that retains a violet crystal stain in the Gram staining method.
They are spherical or cocci-shaped bacteria that can form clusters (in the case of Staphylococcus) or chains (in the case of Streptococcus).
Both Staphylococcus and Streptococcus bacteria are opportunistic pathogens, meaning they can cause infections in certain conditions when the body's defenses are weakened or compromised.
They are part of the normal microbiota found on the skin, respiratory tract, and mucous membranes, but can become pathogenic under certain circumstances.
Additionally, both bacteria possess virulence factors that contribute to their pathogenicity.
For example, Staphylococcus bacteria produce enzymes like coagulase and hemolysins, which aid in their ability to invade tissues and cause damage.
Streptococcus bacteria produce toxins such as streptolysin and pyrogenic exotoxins that contribute to tissue damage and inflammatory responses.
However, it's important to note that Staphylococcus and Streptococcus bacteria are distinct and belong to different bacterial genera. Each type has its own specific species and strains with different characteristics and disease manifestations.
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The statements below represent each step of the Scientific Method based upon a research study conducted about the effects of fast food reported by ABC news, which you can view HERE.
Choose which step of the scientific method is represented by this statement:
People who increase their caloric intake by 1000 calories per day are more likely to develop hypertension (
The statement representing is Hypothesis (What do you believe will happen?) People who increased their caloric intake by 1000 calories per day are more likely to develop hypertension (high blood pressure).
Generating reliable forecasts about a certain event using a hypothesis is the procedure. Based on the information and data at hand, it is a reasonable assumption or explanation of certain phenomena. It serves as the basis for more research and aids in predicting how an experiment will turn out. A hypothesis may be utilised to make additional predictions and to build an understanding framework. It is a crucial phase in the scientific process since it gives an experiment structure and a foundation for subsequent analysis.
A procedure used to make a discovery or test a hypothesis is called an experiment. A 20-person experimental group will consume an additional 1000 calories from fast food each day on top of their usual daily calorie consumption. A control group of 20 participants will maintain their regular diet and not ingest an additional 1000 calories from fast food. Each individual in both groups will have their blood pressure taken once a week for a total of eight weeks.
Results (The experiment's result.) 70% of the experimental group's patients had hypertension by the end of the eight-week period. Only 5% of the patients in the control group experienced hypertension. Data showed that increasing calorie consumption in the experimental group increased the risk of developing hypertension, supporting the hypothesis.
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Complete Question:
The statements below represent each step of the Scientific Method based upon a research study conducted about the effects of fast food reported by ABC news, which you can view HERE. Choose which step of the scientific method is represented by this statement:
A. Hypothesis (What do you believe will happen?) B. Experiment (Procedures that lead to a discovery or test a hypothesis.) C. Results (The outcome of the experiment.) ___. The hypothesis was supported by the data; the increased intake of calories in the experimental group increased the likelihood of developing hypertension. ___. An experimental group of 20 subjects will consume an extra 1000 calories per day from fast food, in addition to their normal daily caloric intake. A control group of 20 subjects will not consume an extra 1000 calories from fast food and will continue with their normal diet. The blood pressure of each subject in both groups will be recorded once per week for eight weeks. ___. People who increased their caloric intake by 1000 calories per day are more likely to develop hypertension (high blood pressure). ___. After eight weeks, 70% of subjects in the experimental group had developed hypertension. In the control group, only 5% of subjects developed hypertension.
Cystic fibrosis is a condition passed on through which type of inheritance?
identify two examples of the benefits of having track of their daily eating habits through this study
Two examples of the benefits of having track of their daily eating habits through this study are;
Improved nutritionWeight managementWhat is daily eating habits ?Daily eating habits can be described as the process of checking what we eat on the daily basis which help us to maintain a healthy life.
It should be noted that in life we re he reflection of what we et on the dailym basis because if we eat well we will be able to have a halthym life style, hence we can see that benefits of having track of their daily eating habits through this study are Improved nutrition and Weight management
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Decomposers play an important role in an ecosystem. Identify one type of decomposer that is most likely found in this ecosystem.
Fungi are important decomposers, especially in forests. Some kinds of fungi, such as mushrooms, look like plants.
Decomposers (fungi, bacteria, invertebrates such as worms and insects) have the ability to break down dead organisms into smaller particles and create new compounds. We use decomposers to restore the natural nutrient cycle through controlled composting.
The two common examples of decomposers are bacteria and fungi. They play an important role in clearing the debris of dead remains of plants and animals and convert them into humus which enriches the nutrients of the soil.
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All organisms fit into two categories, what are they?
If reproductive strategies had slogans, which slogan would each use?
1. "The more the merrier!"
2. "Quality, not
quantity"
3. “Live to mate another day."
4. "Go out with a bang!"
K-selection
r-selection
iteroparity
semelparity
"The more the merrier!" will have the r-selection
"Quality, not quantity" will have K-selection
“Live to mate another day." will have iteroparity
"Go out with a bang!" will have semelparity
What is iteroparity?
Semelparity and iteroparity are known as the two contrasting reproductive strategies available to living organisms.
A specie is considered semelparous if its characteristics is by a single reproductive episode before death while it is considered iteroparous if it is characterized by multiple reproductive cycles over the course of its lifetime.
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What do we mean by positive and negative sense virus?
Answer:
The key difference between the negative and positive sense RNA virus is that the negative sense RNA virus comprises viral RNA, which is complementary to the viral mRNA, while the positive sense RNA virus comprises viral mRNA, which can be translated into proteins directly.
As a teacher you must ensure that all learners are accommodated in your classroom. Design a poster for your class. The poster should make learners aware about accommodating each other. Mention at most four strategies that you will use to make learners aware. For each strategy show how learners should behave towards each other. The title of your poster should be “INCLUSION IN OUR CLASSROOMS”. Your poster size must be an A4 paper. The poster should be neat and attractive. Your poster should not be handwritten.
Marking criteria
Poster appearance (4)
Strategies (8)
Learners’ behaviour (8)
Total 20
To create an poster, Title: INCLUSION IN OUR CLASSROOMS, Strategies: Respect and Acceptance. Collaboration and Cooperation Support and Empathy and Celebrate Differences.
Title: Consideration IN OUR Study halls
Techniques:
Regard and Acknowledgment:
Students ought to embrace variety and regard each other's disparities.
Act comprehensively by keeping away from generalizations, bias, and oppressive language or activities.
Treat everybody with benevolence and sympathy, no matter what their experience, capacities, or personalities.
Joint effort and Collaboration:
Urge students to cooperate in gatherings and groups, cultivating collaboration and common help.
Stress the significance of undivided attention, esteeming others' viewpoints, and advancing equivalent cooperation.
Participate in comprehensive conversations, permitting everybody to contribute and it are considered to guarantee assorted viewpoints.
Backing and Sympathy:
Urge students to offer assistance and backing to their friends who might require it, without judgment or prohibition.
Encourage a study hall climate where everybody feels open to looking for help and sharing their difficulties.
Practice sympathy by getting it and recognizing the encounters and sensations of others.
Observe Contrasts:
Advance a culture of appreciation for different societies, customs, dialects, and capacities.
Urge students to share and commend their interesting foundations and encounters.
Participate in exercises that bring issues to light about various societies and empower discourse and understanding.
Keep in mind, the key is to make an alluring and outwardly engaging banner that actually imparts the message of consideration and the systems for students' way of behaving.
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Just number 1-20 pls!
An agricultural pest refers to any living organism that disrupts the growth of crops or the production of livestock.
Chemical substances called pesticides are utilized for the regulation of pests that encompass insecticides, herbicides, fungicides, and rodenticides. (others are given in the image attached)
What is integrated pest management?Integrated pest management (IPM) is seen as an eco-friendly and sustainable way to control pests using various methods that minimize harm to the environment and non-target organisms while effectively controlling pests.
Therefore, Monitoring and identification of pests, cultural, mechanical, and biological control methods are used, and pesticides are applied only when needed and in a targeted manner. IPM aims to control pests without harming people or the environment.
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See text below
1. What is an agricultural pest?
2. What is integrated pest management?
3. What are pesticides?
4. What are some types of pesticides used to control selected or target pest populations? 5. What is an herbicide and when are post-emergent herbicides used?
6. What are four ways to control slugs besides using a molluscicide?
7. What are three types of biopesticides?
8. Describe the type of biopesticide called a plant incorporated protectant.
9. What are four types of substances that can be included in a pesticide formulation?
10. What are six formulations in which pesticides are available?
11. What type of legal repercussion may result from failure to comply with the directions of a pesticide label?
12. What are some types of important information found on a pesticide label?
13. What do the signal words caution, warning, and danger mean when printed on a pesticide label?
14. What must a person do to qualify as a certified applicator?
15. Why should a pesticide applicator cover as much of his or her bare skin as possible? 16. What are some safety protocols that should be followed when mixing pesticides? 17. When is the best time of day to apply pesticides in a garden and why?
18. What are four ways poison can enter an organism?
19. What should you do in the event of a pesticide poisoning?
20. What guidelines should you keep in mind when storing pesticides?
Thinking Critically
1. You recently noticed your neighbor spraying what appeared to be a pesticide in his lawn right next to a stream that leads to a river and, eventually, the ocean. What wo you do?
2. On a visit to a relative's home, you notice that pesticides in the garage are not store properly, and they are within the reach of children. The situation appears to be dangerous. What would you do to address the situation?
What are the six characteristics of living things?(one word for each) 1.have 2.use 3. 4.grow and 5.respond to 6. Blank 1: Blank 2: Blank 3: Blank 4: Blank 5: Blank 6:
Explanation:
1. Have
2. Use
3. Energy
4. Grow
5. Respond to
6. Environment
Which statement describes complete dominance when different alleles are
present?
A. The phenotype is an intermediate combination.
B. Only one allele determines the phenotype.
C. The phenotype is controlled by multiple alleles.
D. Both traits are shown at the same time.
Answer:
The answer is B
Explanation:
in complete dominance only the dominant allele is expressed, and it determines the phenotype e.g Tt T stands for tall trait and t stands for short trait and we can see that T is expressed over t. The phenotype which is the outward/ physical appearance shows that the person is tall.
In complete dominance, when an organism has two different alleles for a particular gene, one allele is dominant over the other and determines the phenotype. Therefore, option B is correct.
Dominant alleles are versions of a gene that will be expressed in the phenotype of an organism, even if there is only one copy of the allele present in the genotype.
In genetics, alleles are alternative forms of a gene that occupy the same position, or locus, on a specific chromosome. An organism inherits two alleles for each gene, one from each parent. If the dominant allele is present, it will determine the phenotype.
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Often times HOW we affect the environment is shaped by our BELIEFS.
Discuss how beliefs can possibly affect the environment.
Environmental beliefs are regarded as a system of attitudes and beliefs that determine people's environmental behavior.
Four human values are considered to underlie individuals' environmental beliefs and behaviors: biospheric (i.e., concern for environment): self-transcendence. altruistic (i.e., concern for others): self-transcendence. egoistic (i.e., concern for personal resources): self-enhancement.
Land can affect how people develop their beliefs and values. Geographic location can influence how people see their environment, which in turn has an effect on how they develop their beliefs. People attach deep meaning to themselves and their interaction with the land.
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Which position in a codon is most likely to result in altered protein structure and function if a point mutation occurs?
A.) The second position
B.) The third position
C.) The first position
C, The first position
1. Conditions happen to be really good this year for breeding and next year there are 1,245 young
"potential" Biology instructors. Assuming that all of the Hardy-Weinberg conditions are met, how many of
these would you expect to have poor vision and how many with good vision?
2.A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is
caused by the recessive genotype, "aa". Calculate allelic and genotypic frequencies for this population.
3. The ability to taste PTC is due to a single dominate allele "T". You sampled 215 individuals in biology, and
determined that 150 could detect the bitter taste of PTC and 65 could not. Calculate allelic and genotypic
frequencies for this population..
On the conditions being really good this year for breeding:
153 young "potential" Biology instructors to have poor vision and 525 to have good vision. 15% of the mice will be homozygous dominant (AA), 47% will be heterozygous (Aa), and 38% will be homozygous recessive (aa).49% of the individuals will be homozygous dominant (TT), 39% will be heterozygous (Tt), and 12% will be homozygous recessive (tt).How to calculate frequencies?1. The Hardy-Weinberg principle states that in a population in which mating is random, the frequency of alleles will remain constant from generation to generation. This means that if the frequency of the allele for poor vision is p and the frequency of the allele for good vision is q, then the frequency of each genotype will be:
AA = p²
Aa = 2pq
aa = q²
In this case, the frequency of poor vision is 0.35, so p = 0.35 and q = 0.65. This means that the frequency of each genotype will be:
AA = (0.35)² = 0.1225
Aa = 2(0.35)(0.65) = 0.4225
aa = (0.65)² = 0.4225
Therefore, we would expect 1,245 × 0.1225 = 153 young "potential" Biology instructors to have poor vision and 1,245 × 0.4225 = 525 to have good vision.
2. The allele for white coloring is recessive, so the only way for a mouse to be white is if it inherits two copies of the recessive allele. If the frequency of the white allele is q, then the frequency of white mice will be q². In this case, 35% of the mice are white, so q = 0.588. This means that the frequency of the white allele is 0.588 and the frequency of the non-white allele is 0.412.
The genotypic frequencies can be calculated using the Hardy-Weinberg principle:
AA = p² = (0.412)² = 0.169
Aa = 2pq = 2(0.412)(0.588) = 0.472
aa = q² = (0.588)² = 0.338
Therefore, 15% of the mice will be homozygous dominant (AA), 47% will be heterozygous (Aa), and 38% will be homozygous recessive (aa).
3. The ability to taste PTC is due to a single dominant allele "T". If the frequency of the T allele is p, then the frequency of the t allele is q = 1 - p. In this case, 150 of the 215 individuals could detect the bitter taste of PTC, which means that p = 0.702. This means that the frequency of the T allele is 0.702 and the frequency of the t allele is 0.298.
The genotypic frequencies can be calculated using the Hardy-Weinberg principle:
TT = p² = (0.702)² = 0.492
Tt = 2pq = 2(0.702)(0.298) = 0.392
tt = q² = (0.298)² = 0.088
Therefore, 49% of the individuals will be homozygous dominant (TT), 39% will be heterozygous (Tt), and 12% will be homozygous recessive (tt).
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