On what characteristic of an organism does natural selection exert pressure? a. allele frequency

b. gene pool

c. genotype

d. phenotype

option D.

Phenotype

Explanation:

Theory of natural selection shows that different organism survive, adapt and reproduce in their environment due to their different phenotypic variation. The phenotypic variation exist among individual organisms and it is heritable which is transfer from one generation to another.

Phenotype are traits or physical characteristics or observable characteristics of organism e.g organisms appearance, behavior e.t.c.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

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the correct answer is b