Question

As an environment changes, and some organisms have a higher fitness than others, natural selection acts directly on what.

A. Existing variations
B. Genetic material
Or
D. Individual organisms

Answer 1

Natural selection acts directly on a population's gene pool, but individuals evolve. 
Natural selection acts directly on genotype, but individuals evolve.
Natural selection acts directly on individuals, but genes evolve.
Natural selection acts directly on phenotype, but populations evolve.

Answer 2

As an environment change, and some organisms have a higher fitness than others, natural selection acts directly on genetic material.

What is natural selection?

Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.

Changing in environment changes, the organisms have a higher fitness than other, natural selection acts directly on genetic materials.

Hence, option B is correct.

Learn more about natural selection here:

https://brainly.com/question/9830102

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