Answer: C. It involves a transfer of energy.
Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation.
It is very dark down there, it is so deep that it makes it hard for scientists to be able to survive down there, & there is not really any ready to use equipment since we don't know how it is down there.
Hello there,
It is known as the chyme, a semi-liquid <span>mass of partly digested food that is expelled by the stomach.
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