Question

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QUESTION BELOW VVVVV

Answer 1

A species of fish is unintentionally introduced into a marine ecosystem. The species has a similar diet to an existing fish species, creating competition for food. According to Darwin's theory of evolution by natural selection, which of the following must occur for the existing species to evolve?

A) Individuals within the existing species' population must evolve traits that provide a survival advantage.
B) Mutations must occur to create genetic variation within the existing species.
C) Natural variations in phenotype must be present in the existing species' population.
D) The existing species must reduce its rate of reproduction to produce only the best-fit offspring.

Answer 2

I THINK IT IS A... BUT IT MIGHT BE B...

Answer 3

@DanJS @Preetha

Answer 4

I agree with A

Answer 5

Okay @mtepecz thanks.