To control her body temperature, Elisa perspires heavily. The brain, the body's control center, receives inputs from temperature sensors in the skin, which are transmitted by the blood vessels and sweat glands of the skin to the brain. Elisa perspires in response to the stimuli. Thus, the correct option is A.
What are sweat glands and why they are important?Sweating is released by sweat glands in hot environments or during physical exertion in order to maintain the body's core temperature at about 37 °C. The central nervous system regulates sweating because sweat glands are innervated by neurons.
Phthalates are chemical substances that are widely found in cosmetics, home goods, and plastics. Because the phthalate family of chemical compounds is present in so many common consumer products, some people may be exposed to high levels of them.
Sweat contained some parent phthalates as well as their metabolites.
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which receives dual innervation? arrector pili muscle sweat glands in the axillary region adrenal medulla coronary arterioles
The arrector pili muscle and sweat glands in the axillary region receive dual innervation. Option A is correct.
Dual innervation refers to the receiving of nerve fibers from both the sympathetic and parasympathetic divisions of the autonomic nervous system. The arrector pili muscle, which is responsible for causing hair to stand up (goosebumps), and the sweat glands in the axillary region are examples of structures that receive dual innervation.
The arrector pili muscle is innervated by both sympathetic and parasympathetic fibers. The sympathetic fibers cause contraction of the muscle, leading to the hair standing up, while the parasympathetic fibers have a minor role in regulating its activity.
Similarly, the sweat glands in the axillary region receive dual innervation. Sympathetic fibers stimulate sweat production, while parasympathetic fibers have a minor role in controlling the activity of these glands.
On the other hand, the adrenal medulla and coronary arterioles do not receive dual innervation. The adrenal medulla Erector pili muscles is innervated solely by sympathetic fibers, and the coronary arterioles are primarily innervated by sympathetic fibers as well.
Therefore, among the given options, the arrector pili muscle and sweat glands in the axillary region receive dual innervation.
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The complete question is
Which receives dual innervation?
A. arrector pili muscle sweat glands in the axillary region
B. adrenal medulla coronary arterioles
Which hormone controls the rate at which glucose leaves the blood and enters the cells?
a. CCK
b. Aldosterone
c. Glucagon
d. Insulin
The hormone that controls the rate at which glucose leaves the blood and enters the cells is insulin. The answer is d.
Insulin is a hormone produced by the pancreas and plays a critical role in regulating blood sugar levels. Its primary function is to facilitate the uptake of glucose from the bloodstream into cells, thereby reducing blood glucose levels. When blood glucose levels rise, such as after a meal, the pancreas releases insulin into the bloodstream.
Insulin binds to specific receptors on target cells, particularly muscle, fat, and liver cells, promoting the transport of glucose from the blood into these cells. Once inside the cells, glucose can be used as an energy source or stored for future use.
By enhancing glucose uptake, insulin helps maintain optimal blood glucose levels and prevents hyperglycemia. In conditions like diabetes, where insulin production or utilization is impaired, the regulation of blood glucose becomes disrupted, leading to chronically elevated blood sugar levels. Hence, the correct option is: d. Insulin.
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Identify the nutrients described
The nutrients described are:
Phosphorus - A key component in the formation of organic compounds, such as nucleic acids and ATPNitrogen - Most abundant gas in the atmosphere; plants absorb it from bacteria in the soilCarbon - In every living thing; plants utilize it when they perform photosynthesisWhat nutrients are described ?Phosphorus is a chemical element that is a key component in the formation of many organic compounds, including nucleic acids (such as DNA and RNA) and ATP (adenosine triphosphate), which is the primary energy source for cells.
Nitrogen is a chemical element that is the most abundant gas in the Earth's atmosphere. Although nitrogen gas is not directly available to plants, they are able to absorb it through a process called nitrogen fixation.
Carbon is a chemical element that is found in every living thing, from the simplest bacteria to the most complex animals.
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The full question is:
Identify the nutrients described below.
1.)________________________ A key component in the formation of organic compounds, such as nucleic acids and ATP
2.)_________________________ Most abundant gas in the atmosphere; plants absorb it from bacteria in the soil
3.)_________________________ In every living thing; plants utilize it when they perform photosynthesis
Which is NOT a reason why many people consider living off the grid?
Group of answer choices
to have more privacy
to develop self sufficiency
to cut down on increasing utility bills
to join the fad of living sustainably
Sarcomeres contain thick filaments, which consist of _____, and thin filaments, which consist of _____.
Sarcomeres contain thick filaments, which consist of myosin, and thin filaments, which consist of actin.Sarcomeres are the basic contractile units of skeletal and cardiac muscle fibers. They are composed of a series of overlapping thick and thin filaments made of proteins, which generate force and movement during muscle contraction.
The thick filaments are composed mainly of the protein myosin, while the thin filaments are made up of the proteins actin, tropomyosin, and troponin. The actin and myosin filaments are arranged in a repeating pattern, with the myosin filaments at the center of the sarcomere and the actin filaments attached to the Z-discs at either end of the sarcomere.
During muscle contraction, the myosin filaments slide past the actin filaments, causing the sarcomere to shorten and the muscle to contract. This sliding is mediated by the interaction between the myosin heads and the actin filaments, which are regulated by the presence of calcium ions and the proteins tropomyosin and troponin.
The length of the sarcomere can affect the force and velocity of muscle contraction, with optimal sarcomere length occurring at a certain point of overlap between the myosin and actin filaments. The arrangement of sarcomeres in parallel and in series also affects the force and movement generated by muscle fibers.
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Which ion is a found in a glass of water
In a glass of water, the most common ion found is the hydroxide ion (OH-) and the hydrogen ion (H+).
These ions are formed when water molecules dissociate through a process called self-ionization or autoionization.
In a glass of water, several ions can be found, originating from the dissociation of water molecules. The main ions present are hydrogen ions (H+) and hydroxide ions (OH-), resulting from the self-ionization of water.
Water molecules can break apart spontaneously into equal concentrations of H+ and OH- ions through a process called autoionization. This occurs when a water molecule donates a proton (H+) to another water molecule, forming H3O+ (hydronium ion) and OH-.
Additionally, other ions might be present in a glass of water depending on its source. For example, tap water can contain various dissolved ions like calcium (Ca2+), magnesium (Mg2+), sodium (Na+), chloride (Cl-), and bicarbonate (HCO3-). These ions come from minerals and other substances present in the water source, such as groundwater or surface water.
It's worth noting that the specific ion composition of water can vary depending on factors like location, treatment processes, and water source. However, the fundamental ions present in water are H+ and OH- resulting from the autoionization of water molecules.
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Where do reactants of photosynthesis come from? a. glucose b.we exhale them c. we inhale them from the atmosphere d.plants give them off and release them into the atmosphere e. water f. oxygen
PLEASE HELP!
Answer:
c
Explanation:
What do we call the tiny openings in a
leaf that allow things in and out of the
leaf?
A. chlorophyll
B. Stomata
C. veins
D. blades
Answer:
A
Explanation:
None of those other options are even in a plant
Which of the following are represented by upper and lowercase letters? A. proteins B. chromosomes C. genotypes D. phenotypes
Answer:
Represented by upper and lowercase letters
(C) genotypes
The following are Represented by upper and lowercase letters are
(C) genotypes. Thus, option "C" is correct.
What is Genotype and phenotype?Genotype is the genetic makeup of an individual i.e the genes responsible for a traits or character that is expressed in an individual.
Phenotype is the physical expression of a gene. Each gene in an individual that is expressed or can be seen physically is what makes up the phenotype.
Thus, option "C" is correct.
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Helps asap keep20 points please
Answer:
A. BB B. bb C. EE D. tt
Explanation:
Pasta, Fruit, Bread, and Rice are examples of what type of food?
A. Proteins
B. Nucleic Acids
C. Carbohydrates
D. Lipids
You have performed an experiment on DNA derived from a tumor whereby you have PCR amplified your target DNA using the enzyme Taq I Polymerase. You then have purified the amplified DNA and sequenced the PCR product and from this sequence you observed no obvious SNPs in the chromatogram. However, when you clone and sequence approximately 100 clones, three clones contain a variation not observed in the other 97 sequences. Please explain how this is possible.
In the given experiment, PCR amplification using Taq I Polymerase and subsequent sequencing of the PCR product did not reveal any single nucleotide polymorphisms (SNPs) in the chromatogram.
However, upon cloning and sequencing approximately 100 clones, three clones exhibited a variation not observed in the majority of sequences. This discrepancy can be explained by the presence of multiple templates or heterogeneity within the tumor DNA sample.
During PCR amplification, the Taq I Polymerase may encounter multiple templates present in the tumor DNA sample, leading to the amplification of different sequences. This phenomenon, known as template switching or template jumping, can occur due to the low fidelity of Taq I Polymerase and the presence of diverse DNA templates in the tumor sample. As a result, during the PCR process, different DNA fragments from distinct templates can be combined and amplified, leading to the generation of chimeric or mosaic sequences.
In the case of the experiment described, the initial sequencing of the PCR product represented an average of the amplified DNA, masking the presence of rare variants or minor sequences. However, when cloning the PCR product into separate plasmids and sequencing individual clones, the unique variations present in a small subset of DNA templates became apparent.
Therefore, the observed variations in the three clones that differed from the majority of sequences can be attributed to the heterogeneity of the tumor DNA sample, where different DNA templates or nucleotide subpopulations exist within the tumor, giving rise to diverse sequences detected upon cloning and sequencing.
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The following diagram represents a cell inside a flask of media:
According to the given statement The cell will gain solutes from the surrounding media.
What is a cell?the smallest biological unit capable of supporting life on its own attempting to comprise all living entities as well as the tissues of the body. The three essential parts of a cell are also the cell, the nucleus, and the cytoplasm. The cell membrane, which encompasses the cell, controls the substances that enter and exit the cell.
Why are cells important?Cells provide the framework and essential functions of all living organisms, including germs and humans. Scientists consider them to be the smallest form of life. Cells contain the biological mechanism that produces essential proteins, chemicals, and signals necessary for every body function.
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The complete question is -
The following diagram represents a cell inside a flask of media:© 2012 FLVS Over time, the cell will
what means biotic component?
An economist wishes to estimate the following time series model:
where q is the volume of food consumption, y real disposable income, p1 an index for the price of food, p2 an
index of all other prices and n stands for population. All variables are in logarithms. The economist knows
that the correlation between p1 and p2 is 0.95, and between y and n is 0.93, and decides that the model
above suffers from multicollinearity. The economist decides to consult for advice:
Colleague A suggests dropping all variables with t-statistics less than 2
Colleague B says that multicollinearity results from too little data variation and suggests pooling the
aggregate time series data with a cross-section budget survey on food consumption.
Colleague C recommends to reduce the amount of information that the economist is asking from the
data by imposing restrictions and which are suggested by economic theory.
Colleague D argues that multicollinearity will be reduced by replacing the original model by:
where , because in the above the correlations between
the right hand side variables are lower.
Colleague E says that adding lagged values of q to the equation will reduce multicollinearity since it is
known that is has a significant effect on food consumption.
(a) Is the economist correct in being sure that the model will necessarily suer from multicollinearity?
How would you diagnose multicollinearity?
(b) Suppose that multicollinearity were a problem in this case. Comment on the appropriateness of each
of the suggestions made above.
(a) The economist is correct in being sure that the model will necessarily suffer from multicollinearity. Multicollinearity means that two or more independent variables in a regression are highly correlated, which makes it difficult to determine the effect of each variable on the dependent variable.
(b) Colleague A's suggestion of dropping all variables with t-statistics less than 2 is not appropriate as it may result in important variables being omitted from the model.Colleague B's suggestion of pooling the aggregate time series data with a cross-section budget survey on food consumption may not be appropriate as it may introduce other problems such as sample selection bias and heteroskedasticity.
a) Multicollinearity can be diagnosed using the Variance Inflation Factor (VIF) or the Correlation Matrix. If the VIF values for the independent variables are greater than 5 or 10, multicollinearity is likely present. Similarly, if the correlation coefficient between any two independent variables is greater than 0.7 or 0.8, multicollinearity is likely present.
b) Colleague C's recommendation to reduce the amount of information that the economist is asking from the data by imposing restrictions suggested by economic theory may be appropriate.
Colleague D's suggestion of replacing the original model by a new model where the correlations between the right-hand side variables are lower may be appropriate as it would reduce multicollinearity and improve the model's predictive power.Colleague E's suggestion of adding lagged values of q to the equation may not be appropriate as it may not necessarily reduce multicollinearity.
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archaea and bacteria are both prokaryotes, but only can live in hostile environments such as in hot springs. are not monophyletic and so are very diverse, defined as any eukaryote that isn’t a fungus, plant, or animal.fungi are and cannot produce their own food.
Archaea and bacteria are both prokaryotes, but they can be found in diverse environments, not just hot springs. Fungi are eukaryotes and cannot produce their own food.
Archaea and bacteria are indeed prokaryotes, lacking a true nucleus and membrane-bound organelles. While some archaea and bacteria are known to thrive in extreme environments like hot springs, they are not exclusive to such habitats. Both archaea and bacteria exhibit a wide range of diversity and can be found in various ecological niches. On the other hand, fungi are eukaryotes and are distinct from prokaryotes. Fungi are heterotrophic organisms that obtain nutrients by absorbing them from their surroundings, as they cannot produce their own food through photosynthesis.
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What is true of the elevation of every point along any given contour line?
Answer:
Every point on a contour line is of the exact same elevation
Explanation:
Every point on a contour line is of the exact same elevation. In other words, contour lines connect points of equal elevation. By definition, contour lines separate points of higher elevation from points of lower elevation.
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What does asexual and sexual reproduction have in common?
Require living cells
Produces offspring
Has DNA for genetic information
when a neurotransmitter like acetylcholine is acting in an excitatory manner which of the following is likely a result of the acetylcholine acting on the post synaptic cell? chemically gated sodium channels will open chemically gated chloride channels will open chemically gated potassium channels will open chemically gated sodium channels will be closed
The following is likely a result of the acetylcholine acting on the post-synaptic cell Chemically gated sodium channels will open. Option A.
At the presynaptic end, acetylcholine is stored within presynaptic vesicles. Upon stimulation of the presynaptic terminal, acetylcholine is released from the vesicle and enters the synaptic cleft where the neurotransmitter can freely bind to the receptor. Postsynaptic responses are initiated by acetylcholine receptor-ligand binding.
The postsynaptic membrane contains specific ACh receptors that are concentrated opposite the active zone. This is one of the most characteristic ion channels. These openings allow ion flow after specific binding of ACh. Within the autonomic nervous system, acetylcholine operates in a similar manner by being released from the terminals of neurons and binding to receptors on the postsynaptic membrane of other cells.
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In the Novel: The Immortal Life of Henrietta Lacks in the Week 5 Learning Activities. Christoph Lengauer makes an analogy stating that cells should be treated with the same value as oil. He states, "Why not treat valuable cells like oil? When you find oil on somebody's property, it doesn't automatically belong to them, but they do get a portion of the profits." This excerpt from the novel raises some ethical issues to be examined.
What contemporary ethics and laws in health care practice do Lengauer’s views go against?
Obtaining human cells for research or commercial purposes without the informed consent of the individual
What is the ethics?Patient autonomy is the term used to describe a person's ability to make choices regarding their own body and medical care. By suggesting that individuals should not have complete control over their cells and should not be the exclusive recipients of any revenues generated from them, Lengauer's analogy undercuts patient autonomy.
The ownership of human tissue is a topic of continuing discussion and is governed by several legal systems. Individuals typically have legal rights over their own cells and tissues. In Lengauer's comparison, the ownership rights of individuals over their cells appear to be disregarded.
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Help me PLEASE! Choose one answer! First one to answer get Brainliest!
7.) What is the Law of Superposition?
A.) Objects closest to the top are relatively younger than objects found further down
B.) Gives you the actual age of a fossil
C.) many species produce tons of offspring, all will not survive
D.) remnants of organs or bones that have no use now in the organisms but may have for their common ancestors
Answer:
A
Explanation:
states that each rock layer is older than the one above it. So, the relative age of the rock or fossil in the rock or fossil in the rock is older if it is farther down in the rock layers.
in the sense of alternation of generations, how many generations are included in a mature pine seed?
In a mature pine seed, there are two generations of cells included. The first generation of cells is the diploid generation, which contains two sets of chromosomes.
What is diploid generation?Diploid generation is the stage of a life cycle in which an organism has two sets of chromosomes. This is the most common type of generation for eukaryotes, which are organisms with complex cells that contain a nucleus. During diploid generation, organisms contain two copies of each chromosome, one copy from each parent. This stage is preceded by the haploid generation, which contains only one set of chromosomes, and followed by a meiotic generation, during which the chromosomes replicate and recombine.
This generation is responsible for the production of haploid cells, which contain only one set of chromosomes. The haploid cells then divide to form the second generation of cells, which are the haploid spores. These spores can then go through another cycle of division to form a new diploid generation, which starts the cycle again. Thus, there are two generations of cells included in a mature pine seed.
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Describe what has happened to the effectiveness of the insecticide by the end of the spray program, not the population of mosquitoes.
The effectiveness of insecticide by the end of the spray program would have decreased.
What is an Insecticide?This is a chemical substance specially prepared to kill insects such as mosquito, fly etc.
These insects develop resistance to this chemical with time which thereby leads to a decrease in its effectiveness.
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About 500,000 tons of sediment are eroded from the Grand Canyon every day.
Wind, water, and gravity are constantly widening the canyon. What is making
the canyon deeper?
A. Mass movements
B. Coastal erosion
C. Wind erosion
D. River action
Why is it difficult to tell whether you are homozygous dominant or heterozygous for a trait?
Determining whether an individual is homozygous dominant or heterozygous for a trait can be challenging due to the absence of obvious visual or phenotypic differences between the two genotypes.
In most cases, the dominant allele expresses itself in the phenotype, while the recessive allele remains unexpressed.
Therefore, individuals who are homozygous dominant and heterozygous for a trait would display the same dominant phenotype, making it difficult to differentiate between the two genotypes through observation alone.
To resolve this ambiguity, a test cross can be performed. This involves crossing the individual in question with a known homozygous recessive individual. If the individual is homozygous dominant, all offspring will display the dominant phenotype.
However, if the individual is heterozygous, the offspring will show a 1:1 ratio of the dominant and recessive phenotypes. By analyzing the offspring's phenotypes, it becomes possible to determine whether the individual in question is homozygous dominant or heterozygous.
Without performing such a test cross or utilizing molecular techniques like DNA sequencing, it is challenging to definitively distinguish between being homozygous dominant or heterozygous for a trait based solely on visual observations.
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What is the function of estrogen in the menstrual cycle?A. Causes the egg to develop .B. Maintains the uterus lining.C. Causes the uterus to thicken.D. Causes ovulation.
Estrogen is one of the main hormones that regulate the menstrual cycle. its main function is to prepare the ovary for ovulation.
So they are present to control the cycle, as shown in the image below, in purple you have the estrogen, it appears in the ovulation days, and also before the cycle ends, and they help to develop the egg, the answer might be A
assume a company has two divisions, division a and division b. division a has provided the following information regarding the one product that it manufactures and sells on the outside market:
Division A of the company has provided information about a specific product it manufactures and sells on the external market.
Division A, within the company, has shared details about one of its products that it produces and sells to customers outside of the company. This information could include various aspects such as the product's features, specifications, pricing, target market, production volume, and any relevant market research or sales data.
Understanding the specifics of the product manufactured by Division A is essential for evaluating its performance, market potential, and overall contribution to the company's revenue and profitability. It allows the company to assess the product's competitiveness in the market, identify opportunities for improvement or expansion, and make informed business decisions regarding production, marketing, and sales strategies.
By analyzing the information provided by Division A, the company can gain insights into the product's market demand, customer preferences, and competitive landscape. This information becomes crucial for formulating effective marketing campaigns, optimizing production processes, managing inventory, and ensuring customer satisfaction.
To further enhance the success of Division A's product and the company's overall performance, it is recommended to conduct comprehensive market research, competitor analysis, and customer feedback surveys. This data-driven approach helps in identifying trends, adapting to market changes, and continuously improving the product to meet customer needs and expectations.
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A student analyzes a cross section of earths layers.
Which letter corresponds to a trench in the cross section?
1. L
2. M
3. N
4. O
Answer:
o
Explanation:
Letter M corresponds to a trench in the cross section of earth layers. Therefore, option (B) is correct.
What is a trench?Subduction is a geophysical process in which two or more of the Earth's tectonic plates converge, and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.
These regions, which are known as deep sea trenches, have depths that are nearly three times greater than the typical depth of the sea bottom. The trench zones are distinguished by total obscurity as well as unfathomable pressures that can reach up to 16,000 pounds per square inch.
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identifying an autosomal recessive mutation in a mutagenic screen in drosophila requires identification of a mutant in the f3 generation. if testing for a sex-linked recessive lethal mutation (e.g., cn) using a balancer chromosome such as cncyo, in which generation can lines with mutations be identified?
To identify a sex-linked recessive lethal mutation using a balancer chromosome such as cncyo in Drosophila, lines with mutations can be identified in the F1 generation.
A balancer chromosome is a specialized chromosome used in Drosophila genetics to maintain the integrity of a specific genotype during breeding.
In the case of a sex-linked recessive lethal mutation, the balancer chromosome contains multiple inversions that prevent recombination and help maintain the recessive lethal mutation along with visible markers.
The cncyo balancer chromosome, for example, carries the cn mutation, which is recessive and lethal when homozygous.
When performing crosses with a balancer chromosome, the F1 generation will inherit one copy of the balancer chromosome along with the recessive lethal mutation.
The visible markers on the balancer chromosome, such as eye color or wing shape, can be used to identify the presence of the balancer chromosome and, by extension, the presence of the recessive lethal mutation.
If a line exhibits the phenotypic markers associated with the balancer chromosome, it indicates the presence of the recessive lethal mutation.
Therefore, lines with mutations can be identified in the F1 generation when testing for a sex-linked recessive lethal mutation using a balancer chromosome in Drosophila.
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Cheests as a species of cat best known for being the fastest land animal, with the ability to sprint at speeds of up to 120
Kilometers per hour, Cheetahs have small heads, lean bodies, long legs, and a yellowish-tan coat with distinctive black spots
Cheetahs face extinction pressure from climate change, hunting by humans, and habitat destruction, which is reducing the size of
their populations, Predict how these pressures have affected the genetic diversity of cheetahs.
Answer:
Genetic diversity has decreased due to inbreeding due to dwindling population size.
Cheetahs are facing great pressures, such as climate change, destruction of their habitat, and also hunting by humans that have greatly impacted their genetic diversity.
What are the causes of inbreeding in Cheetahs?Cheetahs have experienced a very declining rate of their populations due to destruction of their habitat, and also hunting by humans that has resulted in inbreeding in their populations and loss of genetic diversity.
Due to inbreeding, cheetahs have become more exposed to genetic disorders and vulnerable to diseases, and other threats.
Climate change has also posed a great threat to the declining population of cheetahs as it has affected their habitats and food resources. Climate change causes alteration in the temperature and rainfall pattern resulting in low availability of prey and water resources. Therefore, climate change leads to the malnutrition of cheetahs and making them more susceptible to severe disease.
Therefore, cheetahs are facing extinction due to climate change, habitat destruction, and hunting by humans.
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