A is the answer. It’s like addition.
<span>This would be an example of a mutation, because the changing of allele frequencies would be a change within the gene itself, which would be a mutation in the DNA. This is evidenced by the fact that there is now a form of human resistance to malaria, due to changes within human DNA itself.</span>
The lifetime risk of developing cancer is a chance a person has over his or her lifetime and can be diagnose of having a cancer. In the scenario about the cancer risks, the answer would be c. the more you drink, the lower your risk is. The more alcohol one's drink does not mean it will lower one's risk of developing cancer.
The immune system helps fight off infections and foreign invaders
