Answer:
Scientists observing something then they try to explain what has been seen. The explanation is called a hypothesis.
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Explanation:
<span> (1) gene frequencies may be changed by migration, gene flow from another population. (2) in small populations, gene frequencies can be changed via random sampling -- this is known as genetic drift. (3) mutation pressure and (4) non-Mendelian segregation (meiotic drive) may also change gene pools. However, by far the most important agent of evolution is (5) natural selection, which operates by </span>differential reproductive success<span> of individuals.
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Yes, natural selection can create different species because over time one species will turn into subspecies and as soon as one subspecies cannot breed with the other subspecies they are no longer the same species. Natural selection creates species through adaption and survival of the fittest, so yes natural selection can create different species.
C.) The substrate for amylase, starch, is not present.
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https://www.immunology.org/public-information/bitesized-immunology/cells/cd8-t-cells
