Final answer:
Natural selection is a process that leads to changes in a population over time. It is one of the main mechanisms driving evolution. This process can result in the adaptation of populations to their environments.
Step-by-step explanation:
Natural selection is a process that leads to changes in a population over time. It is one of the main mechanisms driving evolution. Natural selection occurs when individuals with certain traits are more successful at surviving and reproducing, leading to those traits becoming more common in the population over generations. This process can result in the adaptation of populations to their environments.
Thus, natural selection, a key mechanism in evolution, involves features such as variation in traits within a population, heritability of traits from one generation to the next, and differential reproductive success based on advantageous traits. Over time, this process leads to the adaptation of populations to their environments.