Global challenges related to marine science are as follows:
1. Ocean acidification is a major issue that affects all of the world's ocean industries and has severe negative effects on the environment, society, and the economy. Coordinated government action is required to effectively address this issue.
What is impact of ocean acidification?Ocean acidification will affect the biological, biogeochemical, and ecological aspects of the oceans, and while the effects on the environment, the socio-ecological system, and human dimensions are all still not fully understood, they have the potential to have very dramatic effects. Numerous marine ecosystem services and goods may be impacted directly or indirectly. Industries that rely on these services from the Ocean are impacted.
2. Overfishing:
Overfishing poses a severe threat to the fish in our water, whether it's for the food industry or the aquarium sector. The Food and Agriculture Organization estimates that more than half of the species of marine fish have been totally or overexploited, despite the fact that many of them simply need to remain in the sea because they are not necessary for food security or because they cannot survive in captivity. We are killing entire ecosystems and the food chains that are necessary to keep them healthy by overfishing. Overfishing not only causes the extinction of entire species, but it also directly affects other species in the food chain.
3. Plastic
Between 1.15 and 2.41 million tons of plastic enter the ocean every single year. The Great Pacific Garbage Patch, which is a collection of rubbish in the Pacific Ocean is now three times the size of France. Animals can get tangled in the huge amount of plastic which litter the ocean, and the plastic smothers and destroys coral and sponges. Plastic bags are also often mistaken for food by sea turtles, and they either become trapped or eat the bag which clogs their digestive system. Plastic continuously breaks down resulting in little pieces of “micro-plastic” that are consumed by a variety of marine life, including several species that humans like to catch and eat.
solutions that account for societal needs and wants:
1. Cutting back on carbon emissions.
2. Reducing plastic usage.
3. Making sure the fish you consume is supplied sustainably and ethically.
4. Participating in beach cleanups.
5. Only purchase aquarium fish that were raised in captivity.
6. Supporting elected officials that favor a wholesome atmosphere
7. Contributing to environmental organizations that protect our oceans.
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Photon energy, Wave Frequency and Wavelength are represented in the:
Photon energy, Wave Frequency, and Wavelength are represented in the Electromagnetic spectrum. Thus, the correct option is A.
What is Wavelength?Wavelength may be defined as the space between equivalent points (crests) in the contiguous cycles of a waveform movement propagated in space. It is represented as λ (lambda).
The wave frequency and wavelength are inversely related to one another, while photon energy is directly related to wave frequency, but inversely related to wavelength.
We study the association of all these terms in the unit of the electromagnetic spectrum.
Therefore, it is well described above.
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the growth of a plant in size is regulated by a plant hormone. explain
Abscisic acid
Abscisic acid serves as an antagonist to Gibberellic acid. It is also known as the stress hormone as it helps by increasing the plant-tolerance to various types of stress.
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Plant hormones, also known as phytohormones, regulate growth by influencing cell division, elongation, differentiation, and various physiological responses in plants. These hormones include auxins, gibberellins, cytokinins, abscisic acid, and ethylene.
Plants regulate their growth in size through the action of plant hormones, also known as phytohormones. These are chemical messengers produced by various parts of the plant, such as the roots, stems, leaves, and flowers.
There are several types of plant hormones, each with specific roles in growth regulation:
Auxins: These hormones are responsible for cell elongation and differentiation. They promote growth by increasing the flexibility of cell walls, allowing cells to elongate. Auxins are also involved in tropisms, which are growth responses to external stimuli like light (phototropism) or gravity (gravitropism).
Cytokinins: Cytokinins promote cell division and growth in areas such as roots, shoots, and fruits. They play a role in controlling the balance between shoot and root growth.
Gibberellins: Gibberellins are involved in stem elongation, seed germination, and flowering. They stimulate cell division and elongation, leading to increased plant height and size.
Abscisic Acid (ABA): ABA is often called the "stress hormone" because it regulates responses to stress conditions like drought, cold, and salinity. during adverse conditions.
Ethylene: Ethylene is a gas that regulates fruit ripening, senescence (aging), and responses to mechanical stress. It plays a role in processes like leaf abscission (shedding) and root growth inhibition.
Thus, plant hormones, also called phytohormones, control growth in plants by affecting cell division, elongation, differentiation, and a variety of physiological responses.
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What is the role of RNA polymerase?Which molecule brings amino acids to the ribosomes to be assembled into proteins?
An enzyme called RNA polymerase is in charge of converting a DNA sequence into an RNA sequence during transcription.
The molecule that brings amino acids to the ribosomes to be assembled into proteins is Transfer RNA (tRNA) . Transfer RNA (tRNA), small molecule in cells that carries amino acids to organelles called ribosomes, where they are linked into proteins.
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for patients with prediabetes, what strategies does the diabetes prevention program show are effective in reducing the risk of progressing to type 2 diabetes?
Lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progression of prediabetes to type 2 diabetes.
What is diabetes?Diabetes is a disease in which the body is unable to utilize glucose in the body efficiently.
Patients who are prediabetic are at risk of developing diabetes.
However, the diabetes prevention program shows that lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progressing to type 2 diabetes.
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Answer:
it is D
Explanation:
got it right edge 2022
Which of the following choices is a goal of science?
A. To make people happier
B. To explain how things work
C. To increase a company's sales
D. To support the government
Which is not a symptom of cystic fibrosis
A lack of ability to strengthen muscles
B trouble digesting food
C thick layer of mucus that can block airways
Answer:
Its A
Explanation:
Lack of ability to strengthen muscles
Which of the following energy is converted into chemical energy by the chlorophylls?
Thermal energy
Light energy
Heat energy
Nuclear energy
Answer:
light energy
Explanation:
Plants take in sunlight given off by the sun to make food during photosynthesis
Answer: Light Energy
Explanation: Chlorophyll absorbs light energy for photosynthesis
Sari and Jon disagree over who needs more calories (proportionately) per day to survive a three-month-old baby or a
grown adult San argues that a grown adult is bigger and needs more calories per pound of body weight Jon believes
the baby would require more calories per pound of body weight
he is most likely conect and why?
San, because it takes more energy to move the larger muscles that adults have, so they need more calories
Jon, because babies grow at a much berate than adults and require more cabries to support this growth
Jah, because babies are more active than grown adults and need more energy from calories
San because adults have more to do during the day and need more calories to sustain their activities
San is correct , because it takes more energy to move the larger muscles that adults and is denoted as option A.
What is Calorie?This is referred to as a unit of energy in food substances such as carbohydrates, fats etc.
Adults have larger muscles composed of bigger tissues which requires more energy for their functioning in our daily activities which is why San was correct.
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Place the following statements in the correct order in the blanks below to describe how
glucose is transported from the palisade cells to the rest of the plant. Statements may be
used once.
a. Water enters the phloem through osmosis
b. Water exits the phloem through osmosis
c. Glucose is actively transported into the phloem
d. Glucose is actively transported out of the phloem
e. Pressure from the leaves pushes the water and glucose through the phloem
f. An area of low glucose concentration is reached
____ ____ ____ ____ ____ ____
The correct order in the blanks are as follows: C A E F G B
c. glucose is actively transported in to the phloem
a. Water enters the phloem through osmosis
e. Pressure from the leaves pushes the water and glucose through the phloem
f. An area of low glucose concentration is reached
g. Glucose is actively transported out of the phloem
b. Water exits the phloem through osmosis
What is translocation?
The transport of sugar created during photosynthesis to all other areas of the plant for respiration and the other activities mentioned above is known as translocation.
Utilizing light energy, plants use photosynthesis to convert the inorganic chemicals carbon dioxide and water into glucose. Respiration uses a portion of the glucose created by photosynthesis. The seven biological processes receive energy as a result.
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A variety of mice can have either gray fur (G) or white fur (g). Which words
describe the genotype of a mouse that inherits two of the alleles for gray fur?
O
A. Heterozygous gray
B. Heterozygous recessive
OC. Homozygous dominant
O D. Homozygous white
Answer:
[tex]\huge\boxed{\sf C. \ Homozygous\ dominant}[/tex]
Explanation:
Key:Since the dominant trait is denoted by a capital letter, gray is a dominant trait denoted by G.Recessive trait: White fur denoted by g.The mouse inherits two of the alleles for gray fur i.e. GG.
GG is gray (dominant trait) and GG is having the identical alleles so it will be called homozygous dominant.
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What is the immune system response to malaria?
Outline the 3 lines of defence of the immune system.
Answer:
Although the evidence for a protective role of B cells and antibodies has been noted, the direct contribution of CD4+ T cells in protection against blood stages beyond a helper function for CD4+ T cells has mainly derived from rodent models of malaria.
The cost of renewable energies has increased over the last decade
A. true
B. False
Question 10 of 10
If research is restricted, then the new discoveries made are limited. Which
action is most likely to decrease the number of discoveries scientists can
make?
OA. Ignoring public opinion
OB. Increasing private funding of research
OC. Eliminating government funding of research
OD. Removing government regulations
SUBMIT
Answer:
C. Eliminating government funding of research.
Explanation:
Government funding is the backbone for new research and discoveries in any country. Without government funding, the number of discoveries and technology will decline drastically because research requires lots of money which every private organization may not be able to provide.
Question 7: What conclusions can you make about how a change in the condition of the ocean affects the different species in coral reefs?
A. Point Source
B. Non-Point Source
This would be
considered what
type of water
pollution?
The given scenario would be considered "Point Source" water pollution.
Point source water pollution refers to the contamination of water bodies that can be traced back to a specific, identifiable source or location. This type of pollution occurs when pollutants are discharged directly into water bodies through pipes, drains, or other identifiable outlets.
These sources can include industrial facilities, wastewater treatment plants, oil spills, or sewage systems. Point source pollution is relatively easier to monitor and control because the source is identifiable, allowing for targeted measures to reduce or eliminate the pollution.
In contrast, non-point source pollution refers to pollution that is more diffuse and comes from multiple, widespread sources, such as agricultural runoff, urban runoff, or atmospheric deposition.
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A DNA segment in a somatic cell undergoes the mutation shown;
ATTACC à ACTTACC
This represents a
______Mutation
Answer:
This represents a frameshift mutation.
Explanation:
The difference between the two sequences is that there is an extra base (C) in the second sequence. A frameshift mutation occurs when there is an insertion or deletion of a nitrogenous base into a DNA sequence.
What is the pressure in mm hg of a 0.025 mole sample of co2 at 350 k in a 2.00 l container? report your answer to the nearest mm hg
The pressure in mmHg of a 0.025 mole sample of CO2 at 350 k in a 2.00L container is 273.6 mmHg.
How to calculate pressure?The pressure of a gas can be calculated using the following expression:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureP × 2 = 0.025 × 0.0821 × 350
2P = 0.72
P = 0.72/2 = 0.36atm
Therefore, the pressure in mmHg of a 0.025 mole sample of CO2 at 350 k in a 2.00L container is 273.6 mmHg.
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Which statement best describes scientists who contributed to the current body of science knowledge
The appropriate choice must be (A).
What is the role of scientists in society?Science contributes greatly to the generation of knowledge and hence contributes to the operation of democracies, fosters innovation and allows countries to be competitive in the global economy.
The ongoing work of men and women from various nations throughout history has contributed to the existing body of scientific knowledge.
It is not simply wealthy men with money who could conduct experiments and get a scientific conclusion. We are all familiar with Marie Curie, who is renowned for her work in radioactivity and twice earned the Noble Prize.
Of course, advances in science have been accomplished before to the 20th century; for instance, Newton discovered gravity in the 17th century.
Therefore, the existing body of scientific knowledge is not constrained by specific limitations; rather, it is the result of ongoing efforts made by men and women from various nations throughout history.
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Explain the feelings of Eliezer and his father during the Rosh Hashana celebration
Answer:
got this from a website
Explanation:
Eliezer shares a silent, powerful moment of sadness and understanding with his father. For Yom Kippur, when Jews traditionally fast, his father forbids Eliezer from fasting. Eliezer no longer believes in such rituals, anyway.
it is a feeling of sadness
what are the components of the PNS ?
The components of the Peripheral nervous system consists of nerves, ganglia and nerve endings.
What is the function of peripheral nervous system?The peripheral nervous system is one of the divisions of the central nervous system. Its function is to transmit information from it to other organs and specific parts of the body. Function is carried out through the nerves and nerve ganglia.
In this case, we can say that The Peripheral Nervous System is formed by nerves and ganglia and its function is to bring information to the Central Nervous System and responses to Organs effector organs.
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In pea plants, tallness (t) is dominant to shortness (t). what are the predicted percentages of the genotypes of the offspring if a homozygous short plant is crossed with a heterozygous tall plant?
If a homozygous short plant (tt) is crossed with a heterozygous tall plant (Tt), the percentage of tall offsprings is 50% and the percentage of short offspring is 50%.
A heterozygous tall pea plant will have the genotype "Tt" and a homozygous short pea plant will have the genotype "tt" because homozygous means that both alleles are identical.Since 'T' is dominant over 't', any plant with at least one "T" allele will be tall (the dominant trait), regardless of what the other allele is.The punett square of the following problem will have 2 squares with Tt genotype and 2 squares with tt genotype.Hence, the genotypic ratio of F1 generation will be
Tt : tt
1 : 1
And phenotypic ratio of F1 generation will be
Tall : Short
1 : 1
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Arrange the following events that occurred during the French and Indian War in chronological order.
the British gain control of St. Lawrence River
the Battle of Monongahela River
the battle for the city of Quebec
the siege of Fort William Henry
↓
↓
↓
1. Monongahela River
2. Fort William Henry
3. British gain control of the St. Lawrence River
4. Battle of Quebec
What is the Battle of Monongahela River?All battles given were between the French and British. However, the two battles that happened prior to 1756 were the Battle of Monongahela River and the Battle of Lake George. The first battle happened on July 9, 1755. It was won by the French and Indian troops against the British and Americans. The second battle happened on September 8, 1755. It was won by the British, and is considered their first major victory against the French troops.
Thus, this could be the answer.
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Which animal had to eat the most frequently in order to maintain its energy level
Answer:
A. Rattlesnake
B. Small fish
C. Hummingbird
D. Kangaroo rat
Explanation:
These animals live in a very harsh climatic region so the need fulfill their hunger properly according to the difficulties and problems.
Can someone help me please
wise is the answer because the word bold also means wise
the answer is lazy because sage also means lazy
Please use the graph to the
left to help you answer this
question.
Which of the following
describes the DEPENDENT
variable?
A. the group in which the conditions
were not changed
B. the variable that is changed by the
person doing the experiment and
located on the x-axis
C. the variable that is observed or
measured by the experimenter and
located on the y-axis
9
D. the observation that the
experimenter made that started the
experiment
Answer:
C
Explanation:
The dependent variable is always the outcome, data, or what is being measured in an experiment.
How many layers of tissue does an artery have?
The Artery contains three layers of tissue; Intima, media and adventitia.
The artery plays a vital role in the body; the artery carries blood away from the heart. This blood vessel carries blood away from the heart to important organs and tissues in the body.
There are there types of arteries; Elastic arteries, muscular arteries and Arterioles
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Which of the following correctly describes what happens to liquid and gas particles with
more thermal energy?
Select one:
O a. Liquid and gas particles with more thermal energy expand.
O b. Liquid and gas particles with more thermal energy condense.
O c.
Liquid and gas particles with more thermal energy rise.
O d. Liquid and gas particles with more thermal energy fall.
Answer:
i think a. is correct answer (:
hope its help for u
Why was natural selection an important contribution to the theory of evolution?
Answer:
Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.
Explanation:
The receptor cells for vision are located in the _____ and are called _____ and _____
The receptor cells for vision are located in the retina of the eyes and are called rods and cones.
What are receptor cells?
Receptor cells are proteins found either inside a cell or on its surface which receive a signal.
The two primary photoreceptor cells are rods and cones and they contribute to the information used by the visual system to form a representation of the sight.
They are found in the retina of the eye.
Therefore, the receptor cells for vision are located in the retina of the eyes and are called rods and cones.
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