Answer:
d - water
Explanation:
an abiotic factor in any ecosystem is non living
the only non living thing in this ecosystem that is listed is water
so water is the answer
Answer:
[tex]\huge\boxed{\sf Water}[/tex]
Explanation:
Abiotic factors:The factors of an ecosystem which are non-living are called the abiotic factors of the ecosystem.In the given list:
Whales are living.Seaweed is living.Sea stars are living.Water is non-living.So, Water is an abiotic factor of an aquatic ecosystem.
[tex]\rule[225]{225}{2}[/tex]
Describe the processes that occur after pollination, including fertilisation and seed formation.
Answer:
Step one: After pollen has landed on the stigma, it grows a pollen tube down through the style to the ovary. Step two: The nucleus of the pollen grain travels down the pollen tube and fertilises the nucleus in the ovule. Step three: The fertilised ovule develops into a seed.
hope it helps.
List the four types of stem cells, give an
example of each type, and explain how much
each type
can differentiate
Answer:
Totipotent Stem Cells - They can differentiate into any type of human body cell or the placenta.
Example: Fertilized egg cells.
Pluripotent Stem Cells are from totipotent cells and can differentiate into any cell in the human body; however, not many are in the placenta.
Example: Blastocyst cells.
Multipotent Stem Cells - They can only differentiate into closely related cells.
Example: Blood stem cell
Unipotent Stem Cells - They can only produce their type of cell.
Example: Skin stem cells (which can only become a new skin stem cell).
Explanation:
(02.07 MC)
The table below shows population data for a particular country in 2010:
Population (millions) 40.5
Births (per 1,000)
30
Deaths (per 1,000) 3
Total Fertility Rate 3.3
Infant Mortality Rate
(per 1,000 births)
Which of the following would explain why the total fertility rate is 3.8 five years later?
2
O A governmental policy to ensure replacement-level fertility remains constant even though there is no change in death rate.
Females are being given fewer educational opportunities so there is a reluctance to have children.
Couples are able to settle down at younger ages and quality of life has improved in the nation.
O The birth rate is determined to be 28 births for every 1,000 individuals five years later.
Option D seems to provide the most information about the total fertility rate, which is 3.8 five years later.
Why does fertility decline over time?A variety of factors contribute to the decline in fertility rates. One of the factors is primarily due to job changes, reproductive health issues, and other factors.
Thus, the answer is option D is the mathematical option that best explains the total fertility rate of 3.8 five years later.
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A heron, a large wading bird, is hunting in a pond that contains three types of prey: fish, frogs, and snakes. All three types of prey are abundant and provide the same amount of energy to the heron. The heron has the highest handling time capturing fish, an intermediate handling time capturing snakes, and the lowest handling time capturing frogs. What prey item would foraging theory predict that the heron should catch most frequently
The preferred prey item would be frogs.
What is optimal foraging theory?
It is a theory in ecology that proposes that predating animals that get the most energy from minimal efforts are favored by natural selection.
In order words, selection forces prefer investing minimum energy in order to extract maximally available energy.
In this case, the heron needs to use the lowest time to harvest the maximum energy possible. Since all the preys offer the same amount of energy, the one that requires the lowest time would be preferable for the heron.
In other words, frogs would be the most preferable prey.
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What two layers are the smooth muscle cells arranged in?
Answer:
The smooth muscle in the intestine is arranged into two layers: an inner circular layer and an outer longitudinal layer.
The two layers that the smooth muscles cells are arranged in are; an inner circular layer and an outer longitudinal layer.
What are the Intestine Muscles?The smooth muscle cells of the intestine has three layers of smooth muscle that consists of the outer longitudinal, the middle circular, and the inner oblique muscles.
Now, out of all the three layers listed above, the two layers that the smooth muscles cells are arranged in are an inner circular layer and an outer longitudinal layer.
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reviewing Meiosis:
Diagram the phases of meiosis using colored pencils to show the homozygous pairs.
a. the starting cell is 2n. how many chromosomes does it have?
b. hom many chromosomes will it have after Meiosis 1?
c. how many chromosomes will it have after Meiosis 2?
a. the starting cell is 2n. how many chromosomes does it have?
30 chromosomesb. hom many chromosomes will it have after Meiosis 1?
23 chromosomesc. how many chromosomes will it have after Meiosis 2?
15 chromosomes.reviewing Meiosis:
????
Answer:
Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome.
Explanation:
hope it will help you
Which attribute has the potential to influence future thoughts, actions, and human endeavors?
Creativity is an attribute of a person with the potential to influence future thoughts, actions, and human endeavors.
What is creativity?Creativity can be defined as an attribute of a person that involves the use of thought processes and actions, so as to generate original ideas that proffers a unique solution to a specific problem.
This ultimately implies that, creativity is an attribute of a person with the potential to influence future thoughts, actions, and human endeavors.
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Without undergoing any changes itself, the _____ makes changes to the ______.
Without undergoing any changes itself, the enzyme makes changes to the substrate.
What is an enzyme?An enzyme is a biological catalyst that acts by lowering the activation energy in a chemical reaction.
In a chemical reaction, an enzyme binds to a substrate to convert it to one or more products.
In conclusion, without undergoing any changes itself, the enzyme makes changes to the substrate.
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ASAP ASAPWhich of the following is an example of Genetic Engineering?
A. Mating the most productive plants together so their offspring will have a high yield.
B. Altering the DNA of yeast to create vaccines.
C. Raising pure breeds of dogs.
D. Altering the chemical structure of alloys to create better characteristics.
Answer:
D
Explanation:
The literal definition of genetic engineering is the deliberate modification of the characteristics of an organism by manipulating its genetic material.
D. Altering the chemical structure of alloys to create better characteristics.
is the best example of Genetic Engineering
what is genetic engineering?Genetic engineering (also called genetic modification) is a procedure that makes use of laboratory-primarily based technologies to alter the DNA makeup of an organism. this could involve changing a single base pair (A-T or C-G), deleting an area of DNA, or including a brand new segment of DNA.
Genetic engineers alter, splice, eliminate, and rearrange genes a good way to modify an organism or groups of organisms.
uses of genetic engineering
In Medicine: Genetic engineering can be applied to:
Manufacturing of drugs.Creation of model animals that mimic human conditions and,Gene therapy.Human growth hormones.Follicle-stimulating hormones.Human albumin.Monoclonal antibodies.Antihemophilic factors.Learn more about genetic engineering here
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The indigestible part of a plant is called ____. protein carbohydrates fats fiber
Roughage, also known as Dietary Fiber is the indigestible part of a plant.
Answer:
fiber
Explanation:
simply indigestible made of fiber tho
Which statement best explains why cooperation between countries is necessary to prevent a tragedy of the commons?
Since there are so many common areas, sharing between countries should be easier.
If one country overuses a common resource, it depletes the common resource for all.
Common areas are divided among only a few countries, and little access is given to the rest.
Too many countries have access to common areas, and this prevents them from sharing.
The statement which best explains why cooperation between countries is necessary to prevent a tragedy of the commons is that If one country overuses a common resource, it depletes the common resource for all and is denoted as option B.
What is Tragedy of the commons?This is referred to as a situation in which the resources are available to the people and they are overused due to the ease of access to them.
Cooperation between countries will help to curb a country overusing a common resource which will lead to the depletion of the common resource for all.
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Development refers to the increase in size of an individual
true
false
Answer: true
Explanation: Growth refers to change in size, like weight or length. Development refers to changes in physical, social, emotional, and intellectual abilities.
Distinguish between conditioned and simple reflexes
Answer:
Simple reflex action is not really learned and is automatic and involuntary whereas conditioned reflex action is voluntary and has to be learned.
Explanation:
which statement does not apply to experimental surgery on animals?
The statement that does not apply to experimental surgery on animals is that the importance of a sterile surgery is to be decided by the researcher.
What is surgery?A surgical procedure is an intervention that involves the opening of the body of an organism in order to carry it out.
The statement that does not apply in the experimental surgery of animals is that the importance of a sterile surgery is to be decided by the researcher.
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How does the intracellular fluid compartment differ from the extracellular fluid compartment?.
Answer:
The main difference between intercellular and extracellular fluid is that intracellular fluid is the liquid found inside the cell whereas extracellular fluid refers to all the body fluids outside the cell.
Human Impact on Earth Lab Report
Instructions: In the Human Impact Lab, you task will be to assist the Global Protection Agency to decrease the effects of human impact on Earth. Record your observations in the lab report below. You will submit your completed report.
Name and Title:
Include your name, instructor's name, date, and name of lab.
Data:
Record the data in the table below for each of the locations.
Location Timeline Human Impact Measurements Recommendation to Decrease Human Impact
New York City
Water Pollution
(in parts per million) 50 years ago
Present Day
Future Development Impact
Amazon Rainforest
Levels of CO2
(in parts per million) 50 years ago
Present Day
Future Development Impact
Sahara Desert
Loss of land by Erosion (in meters) 50 years ago
Present Day
Future Development Impact
Explanation:
this is one question or one chapter can you please tell me the single question then I will answer
The process of ________ helps to ensure that a scientist’s research is original, significant, logical, and thorough.
Answer: peer review
Explanation:
hope it helped :D
What percent of organic matter sink into deeper water where it may be removed effectively from the atmosphere?
The percentage of organic matter which sinks into deeper water is; 10%.
What is organic matter?The percentage of organic matter produced in the euphotic zone and which subsequently, sinks to deep waters is 10%.
This can be attributed to the fact that 90% of the organic matter produced in the euphotic zone is decomposed in the euphotic zone.
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What happens during prophase of meiosis I?
Answer:
Meiosis I, the first meiotic division, begins with prophase I. During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes. The pairs of replicated chromosomes are known as sister chromatids, and they remain joined at a central point called the centromere.
Explanation:
Having curved or straight thumbs is thought to be a Mendelian trait, and the
straight allele is thought by many geneticists to be dominant. Assuming this is
correct, how would you expect the thumbs of someone with two curved-thumb
alleles to look?
Answer:
considering the straight allele is dominant then the curved thumb allele must be recessive. so,if someone has two recessive alleles they will express that characteristic. Therefore, the person's thumbs would be curved
The origins of the lateral head of the gastrocnemius muscle are the __________.
The origins of the lateral head of the gastrocnemius muscle are the lateral condyle and posterior surface of the femur.
What is a gastrocnemius muscle?A gastrocnemius muscle is also referred to as leg triceps and it can be defined as the largest, posterior, and most superficial muscle of the calf of the human leg, which enables the flexing of the knee and foot because it runs to the Achilles tendon from two lateral heads that are attached to the femur.
In this context, we can infer and logically deduce that the lateral condyle and posterior surface of the femur are the origins of the lateral head of the gastrocnemius muscle.
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What geological change and event occurs at a transform boundary?
A. Plates collide, and a trench is formed.
B. Plates move apart, and a rift is formed.
C. Plates collide, and a mountain is formed.
D. Plates slide past one another, and a fault is formed.
What safety rule should you follow when performing an experiment that involves electricity?
8. if a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the
a. percentage yield.
b. mole ratio.
c. theoretical yield.
d. actual yield.
Answer:
they are calculating the theoretical yield
What is the function of the epithelium?
The function of the epithelium is the lining of the inner and outer body surfaces and comprising the parenchyma of the glands.
What is the function of the body tissue?The epithelium is defined as a type of body tissue that forms the covering on all internal and external surfaces on the human body, lines body cavities and hollow organs and is the major tissue in glands.
Now, the function of the epithelium is the lining of the inner and outer body surfaces and comprising the parenchyma of the glands.
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Describe the relative thicknesses of the walls of the heart chambers of the fetal pig.
The description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
What is the wall of the heart?
The heart chambers are composed of four hollow spaces within your heart. They are;
Two atria (upper chambers) - one to your right atrium and one to the left atrium.
Two ventricles (lower chambers) - One to your right ventricle and one to your left ventricle. Each of these chambers plays an important role in your heart's functioning.
Finally, the description of the relative thickness of the walls of the heart chambers is that; the heart chambers themselves are thin, but the heart chambers are very thick.
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Which of the following describes a renewable of active solar energy?
A. Sustainable lack of a mission
B. Unlimited, clean energy source
C. Replenishable but not renewable
D. Needs energy grid for electricity
Answer:
C: replenishable but not renewable
Explanation:
A hypertonic solution has:
Fewer water molecules outside the cell than are inside the cell
More water molecules outside the cell than are inside the cell
The same number of water molecules inside and outside of the cell
No water inside or outside of the cell
A hypertonic solution has:
Fewer water molecules outside the cell than are inside the cell. Thus, option "A" is correct.
What is hypertonic solution?The cell is in a hypertonic solution because it lost water through osmosis and shrunk.A hypertonic solution contains more solute molecules compared to solvent molecules while the hypotonic solution has more solvent molecules than solute molecules.When a plant cell is placed in a hypertonic solution it loses water through osmosis and shrinks.An animal cell placed in a hypotonic solution absorbs water through osmosis, increases in size and then bursts. Plant cell, on the other hand, does not burst when placed in a hypotonic solution as it contains a cellulose cell wall.Thus, option "A" is correct.
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When unfavorable growth conditions (for binary fission) are present, however, some bacteria form ____________.
The blank space in the task content should be filled with endospores.
What other reproduction form is exhibited by bacteria in unfavorable growth conditions?As an alternative reproduction form, during endospore formation, the bacterium divides within its cell wall, in which case, one part engulfs the other. Endospores are resistant to harsh growth conditions and are able to survuve these conditions and lie dormant for extended periods, even centuries.
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