In neoclassical economics, the value of a resource is determined by the present value of the future cash flows it is expected to generate.
A discount rate that reflects the time value of money is used to calculate the present value of those future cash flows. Therefore, all other things being equal, resources expected to generate cash flows in the near future are generally valued higher than those expected to generate cash flows in the distant future.
This is because the value of money decreases over time, so the present value of future cash flows will be lower the farther into the future you go.
Timber expected to be harvested and sold in the near future is generally valued more highly than timber expected to be harvested and sold in the distant future. This is because the discount rate is low, which increases the present value of future cash flows expected from cutting and selling the wood in the near future. This can make natural resources more valuable today than they will be in the future, leading to overexploitation of those resources.
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Select the two true statements about natural selection.
Only variations that help individuals avoid predators can become more
common through natural selection.
The result of natural selection in a population depends on the population's
environment.
Natural selection causes advantageous variations to become more
common over many generations.
Natural selection can cause an individual to gain new advantageous
variations during its life
The result of natural selection in a population depends on the population's environment and Natural selection causes advantageous variations to become more common over many generations are true statements about the process of natural selection (options 2 and 3).
What is the process of natural selection?The process of natural selection is an evolutionary mechanism associated with the differential survival and reproduction of the most adaptive phenotypes in a given environment.
Therefore, with this data, we can see that the process of natural selection leads to a change in gene allele frequency due to differential reproduction.
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Which of the following are advantages to sexual reproductioin? Choose all that apply.
Requires more energy
Variation helps offspring adapt to change
Requires finding a mate
Embryos receive protection
Takes more time
Produces genetically unique offspring
Requires more energy
Answer:
meow meow meow meow, meow meow meow meow, meow meow
Explanation:
meow
Nucleotides in organisms are composed of -
A glucose units in carbohydrate molecules.
B Fat molecules in the cell membrane.
C nitrogenous bases, five-carbon sugars, and phosphate groups.
D ionic bonds, six-carbon sugars, and hydrogen groups.
In the troposphere, pressure _____________ with height and temperature typically ____ ____ with height.
Temperature and pressure normally decrease with height in the troposphere.
Per thousand feet above sea level, the air pressure in the troposphere decreases by roughly one inch of mercury. Since the earth's gravity holds our atmosphere near to the surface, air pressure decreases as you ascend to greater altitudes. As a result, as one ascends higher in the troposphere, pressure falls.
Because to the heating of the air molecules by radiation and conduction of energy from the Earth's surface, the temperature of the troposphere decreases as one increases in altitude. As a result, air molecules close to the surface have a higher temperature than those further away.
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the hydrogens taken from glucose or a breakdown product of glucose are added to oxygen, releasing energy to
When oxygen is combined with hydrogens extracted from sucrose or a glucose breakdown product, energy is released. transport H+ avidly into the intermembrane...
Two ATP molecules are hydrolyzed for every molecule of glucose to give energy for the early processes, but two ATP molecules are created in the later phases. When oxygen is combined with hydrogens extracted from sucrose or a glucose breakdown product, energy is released. transport H+ avidly into the intermembrane. As a result, towards the conclusion of glyco, there is a positive benefit of two ATP molecules for every glucose molecule that was broken. A total of 2 Adp is produced during the glycolysis process, which converts glucose into lactate and energy (Liver glycogen + 2 Nicotinamide adenine dinucleotide phosphate + 2 Atp + 2 Pis --> 2 Triphosphate + 2 Nadph + Two H+ + 2 Atpase + 2 Hydrate). The process through which food energy is transformed into energy that the body's cells can utilise is called cellular respiration. ATP receives the energy from the glucose storage.
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Which of the following statements about the DNA in one of your brain cells is TRUE? A) Most of the DNA codes for protein. B) All of the genes of the genome are likely to be transcribed. C) Each gene lies immediately adjacent to an enhancer. D) Many related genes are transcribed from a single promoter. E) It is the same as the DNA in one of your heart cells
The following statements about DNA in the brain cells are true:
A) Most DNA codes for proteins.
B) All genes in the genome are likely transcribed.
D) Many related genes are transcribed from a single promoter.
E) It's the same DNA that's in one of your heart cells.
Statement C) Each gene lies immediately adjacent to an enhancer because the location of the enhancers is different.
All cells in the body contain the same DNA, organized into chromosomes and stored in the nucleus of each cell. DNA contains instructions for building and maintaining the body, including the brain and heart.
Most DNA encodes proteins, which are the building blocks of the body and perform a variety of functions, including structural support, signaling, and catalyzing chemical reactions. Each gene is a specific segment of DNA that encodes a specific protein or group of proteins.
An enhancer is a DNA sequence that can regulate gene expression by binding to a specific protein called a transcription factor, and a promoter is a DNA sequence located near the start of a gene that helps initiate transcription. Many related genes are transcribed from a single promoter, which helps coordinate the expression of these genes.
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If Evolution is defined as genetic change over time.... Can we observe this happening in a
species? Explain your thinking. [4pts]
The process of evolution causes the genetic makeup of a population to change through time.
Can we observe evolution happening in a species?Evolution captures how animals adjust to their changing circumstances, which can result in altered DNA, distinctive characteristics, and the formation of new species. Evolutionary processes are influenced by both variations in genetic variability and variations in allele frequencies across time.
While evolution is happening all around us, for many species it happens so slowly that it cannot be seen for thousands or even hundreds of thousands of years, which is much too long for a human lifetime to see.
We can actually watch evolution happen throughout the course of an experiment in organisms with quick generation periods, such bacteria or fruit flies. Additionally, biologists have occasionally seen evolution in action in the wild.
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Compare the physiological processes associated with both continuous and saltatory conduction.
The key difference between saltatory conduction and continuous conduction is that saltatory conduction is the propagation of action potential along myelinated axons while continuous conduction is the propagation of action potential along unmyelinated axons.
Saltatory conduction, as used in the study of neurology, is the acceleration of the conduction velocity of action potentials as they move down myelinated axons between Ranvier nodes. In contrast to electrical conduction in a simple circuit, the only locations throughout the axon where ions are exchanged across the axon membrane to renew the action potential between segments of the axon that are insulated by myelin are the uninsulated nodes of Ranvier.
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FILL IN THE BLANK. when making homebrew, yeasts are added to a sugar, water and hops mixture. it is crucial to limit the input of oxygen in order to force the yeast to undergo fermentation. if oxygen is allowed into the system, the production of___will___and the production of___will .
Yeasts are added to a sugar, water, and hops mixture to make homebrew. To drive the yeast to undergo fermentation, it is essential to restrict the oxygen input. Upon allowing oxygen into the system, the production of oxygen will undergoes and the production of carbohydrates will take place.
In the presence of oxygen, yeast undergo aerobic respiration and convert carbohydrates (sugar source) into carbon dioxide and water. In the absence of oxygen, yeasts undergo fermentation and convert carbohydrates into carbon dioxide and alcohol. When oxygen is not present or if an organism is not able to undergo aerobic respiration, pyruvate will undergo a process called fermentation.
Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis. Yeast use oxygen for cell membrane synthesis. Without oxygen, cell growth will be extremely limited. Yeast can only produce sterols and certain unsaturated fatty acids necessary for cell growth in the presence of oxygen.
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Adding compost to farmed soil is better than adding synthetic fertilizer because: O compost contains disease fighting microorganisms that synthetic fertilizers lack. O synthetic fertilizers contain a great many microorganisms, some of which spread plant diseases. O compost contains carbon, and using only synthetic fertilizers can lead to a loss of soil carbon content. O synthetic fertilizers are adding the primary chemicals to the atmosphere that contribute to the ozone hole.
Adding compost to farmed soil is better than adding synthetic fertilizers for a variety of reasons. Perhaps the most important of these is that compost contains disease fighting microorganisms that synthetic fertilizers lack.
These microorganisms help to keep the soil healthy and reduce the chances of plant diseases. The microorganisms in synthetic fertilizers, on the other hand, can sometimes spread plant diseases.
Another advantage of adding compost to farmed soil is that it contains carbon. Over time, the use of only synthetic fertilizers can lead to a loss of soil carbon content, which is essential for healthy soil. In contrast, compost adds carbon and helps maintain the soil’s fertility.
Finally, it’s important to consider the environmental impact of synthetic fertilizers. Synthetic fertilizers are adding the primary chemicals to the atmosphere that contribute to the ozone hole. In contrast, compost is a natural product and does not contribute to environmental pollution.
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mendel discovered that the allele for green seed pods (g) is dominant to the allele for yellow seed pods (g). he crossed true-breeding (homozygous) parental plants with green (gg) and yellow (gg) seed pods to produce an f1 generation, all of which were heterozygous (gg) with green seed pods. he then crossed two of these f1 plants to produce an f2 generation. drag the genotypes and phenotypes from the left to correctly complete the punnett square for the f2 generation. labels may be used more than once.
The genotypes and phenotypes from the left to correctly complete the punnett square for the f2 generation are:
The Punnett square for the F2 generation:
G g
G GG Gg
g Gg gg
What is the Punnett square about?In this Punnett square, G represents the dominant allele for green seed pods, and g represents the recessive allele for yellow seed pods. The F1 generation plants are heterozygous (GG), meaning that they have one dominant allele for green seed pods and one recessive allele for yellow seed pods.
When these plants are crossed, the F2 generation can have four possible genotypes: GG (homozygous dominant for green seed pods), Gg (heterozygous for green seed pods), gG (heterozygous for green seed pods), and gg (homozygous recessive for yellow seed pods).
The genotypes GG and Gg will produce plants with green seed pods (the dominant trait), while the genotypes gG and gg will produce plants with yellow seed pods (the recessive trait).
Therefore, the F2 generation will have 3 plants with green seed pods and 1 plant with yellow seed pods. The phenotypes in the F2 generation will be 75% green seed pods and 25% yellow seed pods.
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Select the two true statements about natural selection.
h
Only variations that help individuals avoid predators can become more
common through natural selection.
Natural selection causes advantageous variations to become more
common over many generations.
The result of natural selection in a population depends on the population's
environment.
Natural selection can cause an individual to gain new advantageous
variations during its life.
Which table best compares the events that occur during different stages of the cell cycle? A Phase. event. S. Phase. DNA replication. M. Phase. Nuclear division. B Phase. Event. S. Phase. Nuclear division. M. Phase. Cytoplasm division. C phase. event. S. Phase. cytoplasm division. M. phase. cell growth. D phase. event. s. phase. cell growth. m. phase. DNA replication.
The table that best compares the events that occur during different stages of the cell cycle is S phase/DNA replication and M phase/Nuclear division. Option A.
Cell cycleThe cell cycle has two main phases which are further divided into subphases. The main phases are:
S phaseM phaseThe S phase is further divided into:
G1 phase: a phase during which the cell grows and developS phase: a phase during which the cell carries out DNA replicationG2 phase: a phase during which the cell synthesizes proteins.The M phase is further divided into:
ProphaseMetaphaseAnaphaseTelophaseCytokinesisIn other words, the M phase is the active cell division phase.
Following the summary of the cell cycle, the table that best compares what happens during the cell cycle can, thus, be seen as the one that pairs DNA replication with the S phase and nuclear division with the M phase.
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30. According to documents you read about the history of DDT, how was the
chemical first perceived by Americans?
as harmful, dangerous, and deadly
as a way to cure cancer, polio, and malaria
as too expensive to maintain production in America
as a groundbreaking solution for several problems
According to documents you read about the history of DDT, it was the chemical first perceived by Americans as harmful, dangerous, and deadly (Option a).
What is Dichlorodiphenyltrichloroethane (DDT)?Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in many countries around the world in the past, which was disused due to serious harm to the health of humans and also life treating issues to wild life.
Therefore, with this data, we can see that dichlorodiphenyltrichloroethane (DDT) is a well-known insecticide that was disused and capable of causing harm to humans and also wild life in the ecosystems.
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A study of the human ecological footprint conducted by the World Wildlife Fund in 2008 shows that ________.
a. we have already exceeded the planet's biocapacity per person
b. we are far below the planet's biocapacity per person
c. the human population will soon crash
d. Earth can sustain a population about double the current population
A study of the human ecological footprint conducted by the World Wildlife Fund in 2008 shows that we have already exceeded the planet's biocapacity per person. The correct answer is choice a.
According to the 2008 Human Ecological Footprint study conducted by the World Wildlife Fund, we have already exceeded the Earth's biocapacity per person.
This means that humanity is consuming more resources than the earth can sustainably provide, leading to environmental degradation and climate change. Adopting more sustainable practices and policies by individuals, communities and governments is critical to ensuring sustainable sustainability.
Earth's biocapacity is the ability of Earth's ecosystems to produce resources and absorb waste and emissions. If humanity's ecological footprint is greater than the Earth's biocapacity, it means that we are using more resources than the planet can sustainably provide, leading to environmental degradation and climate change.
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The greenhouse effect causes an increase in global temperature. The increase is primarily due to which of the following?
Group of answer choices
A. Carbon dioxide and other green house gases allowing more solar radiation to penetrate the Earth's surface.
B. Carbon dioxide and greenhouse gases slowing the escape of UV radiation from the Earth
C. Carbon dioxide and other gases slowing the escape of heat from the Earth.
D. The loss of ozone that trapped cooling UV radiation in the atmosphere.
Choice C, The global temperature is rising as a result of the greenhouse effect. This rise is mostly caused by the greenhouse gases CO2 and others that block the Earth's heat from escaping.
The way greenhouse gases trap heat close to the Earth's surface is known as the greenhouse effect. You might imagine these heat-trapping gases as a blanket covering the Earth, keeping it warmer than it would be otherwise.
Human activity has led to a rise in greenhouse gas concentrations. Carbon dioxide levels in the environment during the past century have dramatically grown as a result of burning fossil fuels like coal and oil. Burning coal or oil releases CO2 when airborne oxygen and carbon combine, causing this spike.
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Suppose you view a slide under the low-power lens of a microscope. You are able to focus the object, and increase the lens magnification. However, you have trouble focusing the image in the high-power lens. What action is most likely to resolve the issue? O Return to the low-power magnification, refocus on the object, then return to the high-power lens. O Take the slide off the stage and clean the lenses with lens paper. O Use the coarse adjustment knob to try to focus on the object. O Try a different slideOnly the coarse adjustment knob should be used when viewing an image with the high-power lens. O True O FalseIf a specimen is in liquid, how should you mount it onto a slide? O Remove the sample from the liquid and place it on a dry slide. O Put a drop of water on the slide, remove the sample from its liquid and place it in the water on the slide O Place a drop of the sample in its liquid on the slide O Put as much of the sample in its liquid on the slide as you can
A. Return to the low-power magnification, refocus on the object, then return to the high-power lens is most likely to resolve the issue.
This is helpful because you only need to use the fine adjustment on the high-power lens to see the object clearly once it is clear under low power.
Even though using lens-cleaning paper to clean the lens should help, getting the right focus at low power is important, so the second option is not the right choice. Because you typically use the Fine adjustment with high-power lenses and the coarse adjustment with low-power lenses, the third option is incorrect. The final choice would also be wrong because if you can focus with a low-power lens, there is nothing wrong with the slide.
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Determine the ratio of offspring with the described
trait to the total number of offspring:
Unattached earlobes and cleft chin
Unattached earlobes and no cleft
Attached earlobes and cleft chin
Attached earlobes and no cleft
The ratio of offspring with the described trait to the total number of offspring: unattached earlobes and no cleft. So, the correct option is (B).
What is Trait?A phenotypic trait is defined as a specific form of a phenotypic characteristic of an organism which may be either inherited or environmentally determined, but usually occurs as a combination of both.
A heredity-related trait is a specific characteristic of an individual which may be determined by genes, environmental factors, or a combination of both. These can be qualitative (such as eye color) or quantitative (such as height or blood pressure).
Thus, the ratio of offspring with the described trait to the total number of offspring: unattached earlobes and no cleft. So, the correct option is (B).
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the urinary system organ removes waste products from the body and helps regulate blood pressure. T/F
True. The urinary system is composed of several organs that work together to remove waste products from the body and to help regulate blood pressure.
The primary organs of the urinary system are the kidneys, ureters, bladder, and urethra. The kidneys filter out waste products and excess water, which are then transported to the bladder via the ureters. The bladder stores the waste products until they are expelled from the body through the urethra. The urinary system also helps to regulate blood pressure by controlling the amount of water and salt that is excreted in the urine.
Additionally, the kidneys release a hormone that helps to regulate blood pressure. Through these functions, the urinary system plays an important role in maintaining the health of the body.
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based on the information given in slides 3 and 5 , for what set of cancer genes does p53 act as a transcription factor?
Answer:
Based on the information given in slides 3 and 5, p53 acts as a transcription factor for a set of genes involved in the cell cycle and apoptosis (programmed cell death).
Slide 3 states that p53 is a transcription factor that regulates the cell cycle and apoptosis. Slide 5 mentions that p53 activates the transcription of a set of genes involved in the cell cycle and apoptosis, including cyclin-dependent kinase inhibitor genes (CDKIs) and Bax.
CDKIs are proteins that inhibit the activity of cyclin-dependent kinases (CDKs), which are enzymes that regulate the cell cycle. Bax is a protein that promotes apoptosis.
Therefore, p53 acts as a transcription factor for a set of genes involved in the regulation of the cell cycle and apoptosis, including CDKIs and Bax.
Explanation:
P53 acts as a transcription factor and acts as a guardian of the cell, preventing the cell from getting into the cancer stage, and when the p53 is mutant, then various kinds of cancer are formed.
What is the significance of the p53 ?It is a transcription factor that regulates the expression of cells in the cell cycle and induces DNA repair and apoptosis when the cell is not good enough to go into the cell cycle. Because the loss of functional p53 protein is a common feature of many types of human cancer, it is one of the transcription factors that positively regulate the cell for normal cell division.
Hence, p53 acts as a transcription factor and acts as a guardian of the cell, preventing the cell from getting into the cancer stage, and when the p53 is mutant, then various kinds of cancer are formed.
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the sahara desert and the negev desert belong to the same ______ . group of answer choices a. community b. savanna ecosystem c. biome d. temperate grassland
The Sahara and Negev deserts are both parts of the same ecosystem(biome).
Latitude has no effect on an ecosystem, but it does on a biome. All creatures participate in trophic interactions within food webs and chains in an ecosystem, however this is not always the case in a biome. Aquatic, grassland, forest, desert, and tundra biomes are the five main kinds, while some of these can be further broken down into more specialized groups, such as freshwater, marine, savanna, tropical rainforest, moderate rainforest, & taiga. Scientists may define a biome by defining the temperature range, soil type, quantity of light, and water that are peculiar to a location and create niches for particular species.
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the rr for whistling marmot camp is relatively low, but you are curious about the area nonetheless. your colleague who is putting together the study happens to have samples from most of the major water sources near each campground. you take a look at the sample from the whistling marmot stream and observe the following:
The water is crystal clear and free of any visible pollutants. -The water is cold and clear, with a pH level of 6.2. -The water contains a significant amount of dissolved oxygen, providing a healthy environment for fish and other aquatic organisms.
Whistling marmot stream The stream is fed by a healthy mountain spring, meaning the water is constantly replenished with clean and fresh water. From the observations, it appears that the water quality of the Whistling Marmot Stream is good. The clarity of the water and the lack of visible pollutants indicate that the source of the water is not polluted. The cold and clear water with a pH level of 6.2 indicates that the water is not acidic, and the amount of dissolved oxygen indicates that the water is healthy and suitable for aquatic organisms. The fact that the stream is fed by a mountain spring further supports that the water is constantly replenished with clean and fresh water.
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The rami communicantes are associated only with the sympathetic division of the ANS. True or FalseTRUE
The rami communicantes are associated only with the sympathetic division of the ANS . True
The sympathetic nervous system (SNS) is one of the two divisions of the autonomic nervous system, along with the parasympathetic nervous system (PNS) (ANS). For the most part, these two systems work in opposition to one another to regulate various biological functions and parts.
What happens when there is a sympathetic split?
Your sympathetic nervous system's most well-known function is its capacity to respond to dangerous or stressful situations. When this occurs, your sympathetic nervous system activates to help you flee the danger by quickening your heartbeat, moving more blood to your body's neediest regions, and causing other reactions.
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As filtrate moves through the ascending limb of the nephron loop, the filtrate becomes concentrated because more; ions are reabsorbed less; water is reabsorbed less; ions are reabsorbed more; water is reabsorbed
water is reabsorbed less; ions are reabsorbed more; water is reabsorbed The ascending loop of Henle is permeable to ions but impermeable to water
Henle's loop is a long, U-shaped section of the kidney's nephron tubule found in mammals, birds, and reptiles. The recovery of water and sodium chloride from urine is the loop of Henle's main purpose.What is the Henle function's loop?
Utilizing the concept of "countercurrent multiplication," the loops of Henle and the thick ascending limb of the distal tubule's main job is to concentrate urine. A gradient of urea and salt exists in the medulla, with concentrations of these solutes rising as one gets closer to the papillae.
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a plant disease believed to have played a part in the salem witch trials through the production of hallucinogenic alkaloids is
A plant disease believed to have played a part in the Salem witch trials through the production of hallucinogenic alkaloids is ergotism.
Ergotism is a disease caused by the fungus Claviceps purpurea, which infects the seeds of various grasses, including rye and wheat. The fungus produces alkaloids, including lysergic acid, which can cause hallucinations and other symptoms when ingested. Ergotism was prevalent in Europe in the Middle Ages and was known as "St. Anthony's fire" because the symptoms were believed to be caused by the wrath of St. Anthony.
Ingestion of ergot-contaminated grain can cause symptoms such as hallucinations, seizures, and muscle spasms, and in severe cases, it can lead to gangrene and death.
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A field guide for an area describes all the populations present as well as the abiotic components of that region. Which level of ecological organization
BEST describes the focus of this field?
The level of ecological organization is the ecosystem.
What is a population?We know that the term population has to do with the number of species that can be found in a given ecosystem that all share exactly the same characteristics. This implies that the organisms are able to interbreed.
The genetic make up of the organisms that make up a population must be just the same and would not change. Let us recall that the ecosystem refers to a self supporting unit that is composed of the living and the non living parts.
Thus, the ecosystem brings together the populations present in the region as well as the abiotic factors.
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Missing parts;
A field guide for one area describes all the populations present as well as the abiotic components of that region. Which level of ecological organization best describes the focus of this field guide?
answer choices
biome
biosphere
ecosystem
community
Which of the following amino acids is more likely to be found on the exterior of a globular protein and which on the interior? Explain.
(a) Valine
(b) Aspartic acid
(c) Phenylalanine
(d) Lysine
Valine is more likely to be found on the exterior of a globular protein because it is a hydrophobic amino acid, meaning it tends to interact with other non-polar molecules and be repelled by water.
Exploring the Differences Between Interior and Exterior Amino Acids in Globular ProteinsValine tends to interact with other non-polar molecules and be repelled by water. Aspartic acid is more likely to be found on the interior of a globular protein because it is a polar amino acid and therefore more likely to interact with other polar molecules and be attracted to water. Phenylalanine and lysine are both polar amino acids and are therefore more likely to be found on the interior of a globular protein.Learn more about amino acids: https://brainly.com/question/2526971
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Pedigree analysis is often used to determine mode of inheritance (dominant or recessive, for example). Be sure to read the "Tips for Pedigree Analysis" in Figure 14.15 in your text. Consider the following pedigree for the trait albinism (lack of skin pigmentation) in three generations of a family. (Solid symbols represent individuals with albinism.) Complete the unlabeled pedigree by indicating the genotypes for all involved.
In one sense, the term “genotype”—like the term “genome”—refers to the entire set of genes in the cells of an organism. In a narrower sense, however, it can refer to different alleles, or variant forms of a gene, for particular traits, or characteristics.
Based only on a pedigree, you might not always be able to ascertain the genotype of a person. An person may occasionally have homozygous dominant or heterozygous alleles for a characteristic. The relationships between a person and their parents, siblings, and children are frequently used to identify genotypes. The phenotypes of the children can be used to identify the unknown genotype. The unknown individual is homozygous dominant if pairing the recessive phenotypic individual with the unknown dominant phenotype (PP or Pp genotype) results in only dominant phenotypes (no recessive).
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Based on the data in the table, if the number of snakes were to suddenly decrease, which of the following changes would most likely occur in the food web of this ecosystem?A: increase in number of shrews, decrease in number of hawksB: increase in number of hawks, decrease in number of shrewsC: increase in number of grasshoppers, decrease in number of plantsD: increase in number of spiders, decrease in number of plantsA: increase in number of shrews, decrease in number of hawks (Snakes feed on shrews so with less snakes, the population of shrews should increase. Hawks feed on snakes so with less overall food, the population of hawks should decrease.)
When a population in a trophic web is affected by any factor that reduces or increases its population size, the anterior and posterior links in the trophic chain are affected as well. Option A is correct. increase in number of shrews, decrease in number of hawks.
What is the throphic web?The trophic web is the interaction between different organisms involving transference of energy when some of them feed on the other ones. The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
In the exposed example, if snake's population was to suddenly decrease, there would be
a decrease in hawk's populationan increase in shrew's populationSnakes feed on shrews, so a decrease in the number of snakes will allow the shrew's survival and reproductive rate to increase, and hence, to increase their population size.
Hawks feed on snakes and shrews. A decrease in the number of snakes means less available food items for them and more competition. Their population size might be reduced even if the shrew's population increases in size.
Option A is correct. increase in number of shrews, decrease in number of hawks.
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What TWO FACTORS cause the amount of water collected to vary?
