Describe an environmental factor that could influence natural selection and increase genetic diversity. Pick a specific example to illustrate your point.

Usually, Populations have a genetic variation among individuals, which is important to the population's ability to survive in different situations that have an effect on the natural selection. There are different factors which can increase or decrease the genetic diversity, and influencing natural selection.

Explanation: These factors include an environmental factor, one of the major factors, which may cause changes in the genetic variation of a population and influence the natural selection.