Recognize the complete variety of the species and that it's far missing across all of that variety. we would additionally want to be positive that the species has actually become extinct, and is not hidden, as might be the case for an animal this is hibernating underground or a plant this is present in the shape of seeds or spores.
Most of the main reasons for extinction are brought about directly or in a roundabout way by humans. human beings negatively affect the environment by controlling and artificially causing fires, transferring agriculture cultivation with unsustainable strategies, grazing through domesticated animals, overkilling species, and so on.
As species cross extinct, taken out of the meals chain. Animals that ate the newly-extinct species ought to find new food assets or starve. this will damage the populations of other vegetation or animals. moreover, if a predator goes has actually become extinct, its prey's populace can proliferate, unbalancing nearby ecosystems.
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you are a medical microbiologist in dallas, tx. a small population of individuals spread throughout the city has been experiencing alarming yet similar symptoms affecting the liver that have physicians puzzled as to the etiology, although they all suspect it is microbial in nature. what steps would you take to elucidate the organism?
The sample of the livers from the affected patients to the culture and to compare the organisms....grow the suspected organisms in the culture....inoculate the cultured and organisms into the laboratory animal and monitor for the similar symptoms....the culture and analyze the organism was from the lab animal and to determine the relatedness.
The Liver disease can be progress to cirrhosis and the liver failure. Associated with complications may include they increased risk of the bleeding and the infection, the malnutrition and weight loss, and to decreased cognitive function. Some of the liver diseases are associated with an increased risk of the developing liver cancer If up to 50 to 60 percent of the liver and cells may be killed within three to four days in the extreme case like a Tylenol overdose, the liver that will repair completely after the 30 days if no complications arise.
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Locusts (grasshoppers in the family Acrididae) undergo cyclic population outbreaks. Of the mechanisms of density-dependent regulation shown in Figure 53.18 , choose the two that you think most apply to locust swarms, and explain why.
"Intrinsic factors," because locust hormone levels depend on population size, and "Competition for resources," because rising population density increases competition for food and other resources and lowers reproductive rates.
What are intrinsic factors?Among the intrinsic elements are a person's genetic, physiological, and pathological qualities; in other words, these are traits that are "intrinsic" to the person rather than being influenced by their environment.
What's an example of intrinsic?Several instances of intrinsic motivation include: taking part in a sport for enjoyment's sake rather than to compete for recognition. Learning a new language should be done for personal interest rather than professional need.
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Serum phosphorus level has a reciprocal relationship with which serum electrolyte?
Serum phosphorus level has a reciprocal relationship with serum calcium.
What are serum electrolytes?Electrolytes are solutions of substances which contains charged particles called ions which are able to conduct electricity.
The serum electrolytes refers to the ions found in blood serum which produces a potential difference across cell membranes.
Serum electrolytes include;
calcium ionssodium ionspotassium ionschloride ionsserum phosphorusA reciprocal relationship exists between serum phosphorus and serum calcium, such that high calcium results in low serum phosphorus and vice versa.
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Lipids that contain multiple carbon-ring structures are known as phospholipids. true false
False: Lipids that contain multiple carbon-ring structures are known as phospholipids.
Lipids that contain multiple carbon-ring structures are known as sterols (specifically, cholesterol). Lipids are organic compounds that are insoluble in water and can be found in the body as well as in food. There are three types of lipids:
1. Triglycerides
These are the primary lipid compounds found in food or the body. The structure contains glycerol attached by the long chains of three fatty acids.
2. Phospholipids
This is the least common lipid found in both plants and animals. The structure contains a glycerol backbone attached by long chains of two fatty acids.
3. Sterols
They are complex lipid molecules that contain multiple carbon rings. They do not contain fatty acids generally and are not found in plants.
The most common sterol is cholesterol. Cholesterol is not an essential nutrient. This means that it does not need to be taken into the diet but is processed inside the body, the liver. It can cause atherosclerosis when collected in high amounts. It also synthesis bile, vitamin D, and sex hormones.
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Which of the following statements is TRUE?
The energy of the waves is the same at the gamma rays and at the microwaves
The volume of the waves is higher in the middle than at the ends.
The radiation becomes more visible at the ends.
The wavelength decreases as you move from radio waves to gamma rays.
The true statement among the following options are- The wavelength decreases as you move from waves to gamma rays.
Electromagnetic spetrum has a range of all the types of electromagnetic radiations. It consists of gamma rays, x rays, uv rays, visible rays, infrared rays, microwaves rays, and radio waves.
The wavelength decreases as one moves from radio waves to gamma rays with radio waves having longest wavelength and gamma waves having lowest wavelength.
The frequency on the other hand decreases as we go from gamma rays to radio waves with gamma rays having highest frequency and radio waves having lowest frequency. Same pattern can be seen with the amount of energy per photons.
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ow would you distinguish between these two hypotheses after sequencing the same segment of dna in representatives of all ten species? if the level of genetic divergence differs for at least three of the five species pairs, then dispersal is the likely cause. if the level of genetic divergence for all five species pairs is similar, then vicariance is the likely cause. if the level of genetic divergence for all five species pairs is similar, then dispersal is the likely cause. if the level of genetic divergence differs for each of the five species pairs, then vicariance is the likely cause. if the level of genetic divergence differs for at least two of the five species pairs, then d
If the amount of genetic divergence between species in all five pairs of species is similar, then vicariance is the likely cause.
The two hypotheses include:
The ancestors of the species living currently on the island subsequently dispersed to the island from the mainland. This can be the cause of dispersal.
The island was part of the mainland. The rise in sea level made it cut off. In this way, the species on the island diverged from the ancestors who lived on the mainland. This is called vicariance.
Divergence refers to the evolutionary process that resulted in two different species, from a common ancestral species, that are way more similar in their structure and functions. It can be a result of adaptation as per their environment. The geographical distribution of organisms can occur in two ways: either dispersal or vicariance. Vicariance happens when the ancestral species undergoes some changes to adapt to the environment and results in diverging two different species. Whereas, dispersal happens when the ancestral species move to another geographical area and breed accordingly.
Therefore, we can now say that if the amount of genetic divergence in some species is similar, they are likely to undergo vicariance.
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Suppose an individual organism aids the survival and reproductive success of the offspring of its sibling. How might this behavior result in indirect selection for certain genes carried by that individual?
The genes that individuals carry experience indirect selection; the same genes are carried by the individual and the progeny of their siblings.
Instructing the cell to make protein, translation, eukaryotic transcription, and eukaryotic gene expression are a few of the roles played by genes. Different types of genes include housekeeping, structural, non-consecutive, processed, and overlapped ones. The appearance, survival, and environment-responsive behavior of organisms are the three distinct instructions that genes give to cells.Siblings are the genetically related animals that share a similar appearance and are closely linked to one another. Siblings (humans) share 50% of the same DNA, as well as shared interests, mannerisms, and a sense of humor.In the case of humans, a person's genes are closely related to those of their sibling's kids. Indirect selection occurs as a result of this gene activity (link between two characters, one changes due to evolution and other influenced due to natural selection).The genotypic presentation within the population is increased by siblings' reproductive success (the person successfully produces kids).Learn more about the animal behaviour with the help of the given link:
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Comparing the two histograms you drew, do you find support for the researchers' hypothesis? Explain.
Histograms are graphs that show how your continuous data is distributed.
Because they may disclose characteristics about your sample data that summary statistics cannot, they are excellent exploratory tools.
What is histogram analysis explain with example?A graph called a histogram uses rectangles to represent the frequency of numerical values. The height of a rectangle (the vertical axis) symbolises the frequency of a variable's distribution (the amount, or how often that variable appears).
Examine the histogram to see if it displays a normal distribution. Your histogram would have a form after all of the frequencies have been displayed on it. If the pattern resembles a bell curve, then the frequencies are evenly distributed. A peak would appear on the histogram.
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Water (blank) a lot
of other substances! Its
charged molecules attract
other molecules and can
dissolve them.
EX: (blank)
Answer:
Water dissolves a lot of other substances Its charged molecules and can dissolve them. EX: Water and salt
Explanation:
Water Molecules have a slight positive charge on the Hydrogen side and a slight negative charge on the oxygen side. The top layer of water molecules are extra cohesive and likely to create a skin-life surface.
Luis is studying for a quiz on neurotransmission. he wrote in his notes that neurotransmitters are typically stored in _____ in the _____ neuron.
Luis is studying for a quiz on neurotransmission. he wrote in his notes that neurotransmitters are typically stored in vesicles in the presynaptic neuron.
What neurotransmission means?The process of neurotransmission occurs when signalling molecules, known as neurotransmitters, are released from a neuron's axon terminal and bind to and interact with receptors on the dendrites of a nearby neuron .
What is presynaptic vesicle release?Small, electron-lucent vesicles called synaptic vesicles, also known as neurotransmitter vesicles, are grouped at presynaptic terminals. They hold neurotransmitters and exocytose, which is stimulated by calcium, releases them. SVs are produced locally at the terminals following exocytosis.
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which of the following statements is true? answer: which of the following statements is true? the process of diffusion can be reversed, but only if a strong force is applied. the process of osmosis can be reversed by altering the pressure gradient. the process of osmosis can occur in the absence of a selectively permeable membrane. the process of diffusion cannot take place without a membrane present.
The statement that is true is that the process of osmosis can be reversed by altering the pressure gradient (option B).
What is osmosis?Osmosis is the net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.
Osmosis cannot occur without the presence of a semi-permeable membrane.
The principle behind osmosis is the concentration gradient i.e. concentration difference between external and internal environment.
However, the osmotic process can be reversed if the pressure gradient is changed or altered because it is the basis of the movement.
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Identify the tissue types that make up the layers of the skin from superficial to deep.
The epidermis, which is made up of closely packed epithelial cells
The two major layers of the skin are the dermis, which is composed of dense, wavy connective tissue and houses blood vessels, hair follicles, sweat glands, and other structures.
The deepest layer of skin is made of what kind of tissue?The subcutaneous tissue, also known as the hypodermis or subcutis, is the skin's deepest layer.Although it isn't a true component of the skin, it aids in holding the skin to the bones and muscles. Additionally, subcutaneous tissue supplies the skin's nerves and blood flow.The skin contains what kinds of tissues?The epidermis, the topmost layer of our skin, serves as a waterproof barrier and controls the color of our skin.Sweat glands, hair follicles, and hard connective tissue can be found in the dermis, which lies beneath the epidermis.Connective tissue and fat coexist in the deeper subcutaneous tissue (hypodermis).To learn more about layers of skin visit:
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the image to the left illustrates a portion of a nueron. what process is occurring?
The core cell body, where the signal is being conveyed, is the answer.
The nucleus, associated cytoplasm, organelles, and other cell constituents make up the central cell body, or process part, of a neuron. Other parts of the neuron are constructed using proteins produced in the cell body. The presynaptic (or sending) neuron releases a neurotransmitter, which then attaches to a receptor on the surface of the postsynaptic (or receiving) neuron. Neurotransmitters are released by presynaptic terminals, which may branch to connect with a number of postsynaptic neurons. An action potential is the consequence of a neuron's reaction to threshold or suprathreshold stimuli. Its three phases are depolarization, overshoot, and repolarization.
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Which of the following organisms is incorrectly paired with its trophic level? a. cyanobacterium-primary producer b. grasshopper-primary consumer c. zooplankton-primary producer d. fungus-detritivore
The zooplankton-primary producer is incorrectly paired with its trophic level.
Phytoplanktons are the main food producers in an aquatic food chain. They are tiny, autotrophic organisms that live in practically all of the world's oceans and freshwater bodies of water. They constitute the bottom trophic level. The phytoplanktons are consumed by zooplankton. They are second-trophic level organisms and primary consumers.
Zooplankton is a category of heterotrophic plankton that includes everything from tiny creatures to giant animals like jellyfish. Large bodies of water, such as oceans and freshwater systems, contain zooplankton. The most significant types of zooplankton are radiolarians, foraminiferans, dinoflagellates, cnidarians, crustaceans, chordates, and mollusks. Zooplankton is drifting, ecologically significant organisms that represent a crucial link in the food chain.
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during his experiments with pea plants, gregor mendel crossed plants that were heterozygous for two traits with one another in order to determine laws of inheritance. the punnett square shows the results of this cross
Dominance Law
According to the law of dominance, only the phenotypic trait that is dominant will be passed on to hybrid offspring. Recessive characteristics are those alleles that are suppressed, whereas dominant traits are those alleles that control the trait.
What does the second law in inheritance state?According to the law of independent assortment, during gamete development, a pair of characteristics segregates independently of another pair. Different qualities have an equal chance to occur together as the individual hereditary variables assort independently.
What does the third law of inheritance state?According to Mendel's law of dominance, only one form of a trait will manifest in the offspring of two parents who have distinct, opposing qualities. The sole phenotypic trait that the hybrid offspring will display is the dominant trait. The first law of inheritance is known as the law of dominance.
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Pls help (7th grade science)
Answer:
D. Iterative testing
Explanation:
Iterative testing is when you make small changes/ updates to a product based on insights from PREVIOUS test results and user feedback.
So example- Your figuring out if plants grow faster with scheduled watering/feeding times or random watering/feedings. You did the first test run, which was test A. Now your on test B a week later to make sure your results were accurate. You try a different schedule for the feedings (so different times of the day then in test A) but you also have to consider the times you used in test A so you don't just repeat the same thing over again.
I hope that wasn't too wordy, sorry if it was.
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How do prokaryotes and eukaryotes differ in how they store genetic material?
Answer: prokaryotes have one strand while eukaryotes have more than one
Explanation:
What cell stage is
this and describe it
Answer:
Interphase
Explanation:
This may be wrong and sorry about that. But I think Interphase since it's all bundled up together and that seems to be the only part showing on the photo.
Politicians, private enterprise, and the media may not present scientific information accurately, such as information about climate change, because ______
Politicians, private enterprises, and the media may not present scientific information accurately, such as information about climate change, because the accurate information may affect them or they may not be capable enough to present detailed scientific information.
Authorities such as politicians, media, and private enterprises avoid disclosing scientific information that may badly influence them. Sometimes, scientific information may reveal the lack of concern of the government hence to conceal the truth, scientific information is not disclosed.
It may happen that a certain negative effect, such as a virus, may affect the public due to mishandling in a private enterprise or a government lab. In such cases, accurate scientific information is concealed from the public in order to escape the negativity. Scientific information about climate change is also not revealed if the government is being affected by it.
It might also happen that the media or government officials lack the expertise that is required for presenting scientific information accurately.
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During succession, how might the early species facilitate the arrival of other species?
During succession,the early species might facilitate the arrival of other species through the following below:
Increasing fertility.Increasing the water holding capacity of soils.Producing shelter to seedlings from wind and intense sunlight.What is Succession?This is defined as the process by which the structure of a biological community evolves over time as a result of varying types of condition.
Early species may help to facilitate the arrival of other species through their wastes acting as a source of nutrient to the soil and their branches acting as canopies to shield others.
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the reaction allows us to amplify tiny amounts of dna, creating a powerful tool for diagnosis, forensics, and microbial investigation
Polymerase chain reaction (PCR) is the chemical reaction that allows us to amplify tiny amounts of DNA, creating a powerful tool for diagnosis, forensics, and microbial investigation.
What is the Polymerase chain reaction (PCR)?The Polymerase chain reaction (PCR) is a chemical reaction used in molecular biology laboratories to amplify a given nucleotide DNA sequence having less than 1300 base pairs of length.
In conclusion, Polymerase chain reaction (PCR) is the chemical reaction that allows us to amplify tiny amounts of DNA, creating a powerful tool for diagnosis, forensics, and microbial investigation.
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The envelope found in some virus particles differs from the cytoplasmic membrane of cells in that __________.
The envelope found in some virus particles differs from the cytoplasmic membrane of cells in that it does not perform the physiological functions carried out by the cytoplasmic membrane.
For enveloped viruses, transport of the viral genome in the course of the lipid bilayer of the virus and a cell membrane is completed by using a membrane fusion reaction. For nonenveloped viruses, the viral genome is commonly added throughout a mobile membrane through a pore this is original by way of protein components of the viral capsid.
The envelope consists of proteins decided via the viral nucleic acid and substances derived from ordinary host cell additives. capsid is included by means of envelope including proteins, lipid and carb combination.
Enveloped viruses have a phospholipid membrane out of doors their capsid, at the same time as nonenveloped viruses do not have a phospholipid membrane.
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Which groove extends downward form the coronary sulcus on the front fo the heart?
Interventricular artery at the back (The posterior interventricular artery is a branch of the right coronary artery.) Aorta circumflexa (The coronary sulcus at the back of the heart is where the circumflex artery, a branch of the left coronary artery, travels.)
What is coronary sulcus?A depression near the atrioventricular junction of the heart that allows the coronary sinus, coronary arteries, and veins to pass through.
The groove on the surface of the heart that divides the atria from the ventricles is known as the coronary sulcus (also known as the coronary groove, auriculoventricular groove, atrioventricular groove, or AV groove).
Angina is a type of chest pain that is brought on by arteries that are clogged or narrowed from a lack of blood flow. An emergency situation, a heart attack, could result from this kind of angina.
Therefore, circumflex artery groove extends downward from the coronary sulcus on the front of the heart.
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Why does deforestation of a watershed increase the concentration of nitrates in streams draining the watershed?
Deforestation stops nitrogen uptake from the soil, allowing nitrate to accumulate there. The nitrate is washed away via precipitation and enters the streams.
Deforestation shows that also beneath herbal conditions, nitrogen fixation may be followed through nitrification with subsequent leaching of nitrate into the groundwater. but, anthropogenic activities, which include deforestation, can alter the N-cycle by means of producing immoderate mobile nitrate.
Nitrate and nitrite concentrations additionally extensively boom in deforested watersheds. at the same time as nitrogen concentrations in water frequently increase with nitrogen deposition and fertilization, the villages surrounding the streams studied do no longer have big assets of nitrogen additions to the atmosphere.
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MAKE CONNECTIONS Focusing just on the effects of temperature, would you expect the global distribution of C₄ plants to expand or contract as Earth becomes warmer? Why? (See Concept 10.4.)
A benefit of C₄ photosynthesis is that it reduces photorespiration and increases sugar production, which is particularly helpful in warmer climates where C₄ plants are currently found.
As the climate on Earth warms, it is expected that plants that use C₄ photosynthesis will spread out globally. A C₄ plant starts the Calvin-Benson cycle of photosynthesis by fixing CO₂ into a molecule with four carbon atoms. The Hatch-Slack route is another name for the C₄ pathway. It is one of the three photosynthetic routes that have been identified for carbon fixation in plants. The term derives from the 1960s discovery of the C₄ cycle by Marshall Davidson Hatch and Charles Roger Slack. This suggests that some plants initially aggregate the 14C label into four-carbon molecules when given 14CO₂.Learn more about the C₄ Plants with the help of the given link:
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What are the strengths of the trait approach?
Explanation:
Strengths of Trait Approach. The trait approach focuses on the leader and not on the followers or the situation. This approach is concerned with what traits leaders exhibit and who has these traits.
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Although Arroyo does not mention the term "watershed", it is discussed in the unit as being closely related to and impacted by drought and floods. Please discuss how the watershed relates to drought and heat. How might Arroyo have integrated the term watershed into her talk?
Marine science
Although Arroyo does not mention the term "watershed", it is discussed in the unit as being closely related to and impacted by drought and floods. The watershed relates to drought and heat through the water cycle that is upon heating the water rises in the atmosphere in the form of water vapors and upon cooling condenses in the form of rainfall and comes down but during drought low water level in water bodies affect the water flow and quality of water.
Arroyo might have integrated the term watershed by saying that the Rockefeller Foundation is assisting farmers in constructing hillside decks to preserve water and they will also provide insurance when droughts occur.
A watershed is a region of land that frees water into a specific waterbody. Watersheds direct rainfall into creeks and rivers. These shorter bodies of water course into larger ones, such as lakes and oceans.
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What reults would you see if you decolorized with water instead of the acetone.alcohol soultion for either gram postive or gram negative cell?
In the Gram staining procedure, acetone/alcohol is used for the purpose of color differentiation. In the presence of acetone/alcohol peptidoglycan molecules get shrunk in the cell wall for holding the crystal violet iodine tightly.
There might be no differentiation in Gram-advantageous or Gram-positive cells if they're decolorized with water instead of the acetone/alcohol answer. Peptidoglycan molecules do not shrink inside the aqueous surroundings.
Decolorizing will bring about an misguided end end result wherein gram-incredible cells might also stain red to purple indicating a gram-terrible cease result, and below-decolorizing will bring about a defective end result in which gram-terrible cells may additionally additionally appear blue to pink indicating a gram-splendid end result.
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Which term is not associated with urie bronfenbrenner's ecological-systems approach?
The term that is not associated with urie bronfenbrenner's ecological-systems approach is humanism.
What is the ecology about?Urie Bronfenbrenner is credited with developing the ecological systems theory. It provides a framework for examining how people relate to one another within their communities and the larger society, according to community psychologists.
The ecological/systems framework is another name for the theory. The ecological systems theory developed by Bronfenbrenner is one of the most widely recognized theories explaining how social settings affect human development. According to this belief, your upbringing has an impact on every aspect of your life.
The microsystem, mesosystem, exosystem, macrosystem, and chronosystem were the five systems that Bronfenbrenner used to categorize a person's environment.
The ecological systems theory of Bronfenbrenner focuses on the nature and context of the child's surroundings. According to him, these settings' interactions change as a child grows and develops. As a child's physical and cognitive systems develop and mature, this complexity may appear.
In conclusion, humanism isn't part is the system.
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Which term is not associated with urie bronfenbrenner's ecological-systems approach?
microsystem
mesosystem
humanism
exosystem
WHAT IF? Suppose you are studying two bird species that live in a forest and are not known to interbreed. One species feeds and mates in the treetops and the other on the ground. But in captivity, the birds can interbreed and produce viable, fertile offspring. What type of reproductive barrier most likely keeps these species separate in nature? Explain.
The Prezygotic barrier is a type of reproductive barrier that keeps these species separate in nature.
What is Prezygotic barrier?Prezygotic barriers is a type of barrier that prevent members of different species from mating with each other in order to produce a zygote which is a single-celled embryo. For example, two species prefer different habitats which leads no encounter with one another. This is type of isolation is called habitat isolation. In this barrier, the species are unable to mate with each other and no new species are produced.
So we can conclude that the Prezygotic barrier is a type of reproductive barrier that keeps these species separate in nature.
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