Question

select the two true statements about natural selection. the result of natural selection in a population depends on the populations environment. only variations that help individuals avoid predators can become more common through natural selection. natural selection can cause an individual to gain new advantageous variations during its life. natural selection causes advantageous variations to become more common over many generations.

Explanation:

1. Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. The environment plays a crucial role as it determines which traits are advantageous. So, "The result of natural selection in a population depends on the population's environment" is true.
2. Variations that are beneficial in multiple ways (not just avoiding predators, like finding food, coping with climate, etc.) can become more common through natural selection, so "Only variations that help individuals avoid predators can become more common through natural selection" is false.
3. Natural selection acts on existing variations in a population, not cause new advantageous variations in an individual during its life. New variations arise through mutations and genetic recombination, so "Natural selection can cause an individual to gain new advantageous variations during its life" is false.
4. Over many generations, natural - selection favors individuals with advantageous traits, making those traits more common in the population. So, "Natural selection causes advantageous variations to become more common over many generations" is true.

Answer:

1. The result of natural selection in a population depends on the population's environment.
2. Natural selection causes advantageous variations to become more common over many generations.