Answer:
C. by causing mutations in genes
Explanation:
Smoke can induce mutations in genes causing tumors such as lung cancer
The effect that is has on a parent is a sense of accomplishment and happiness because they get to watch their baby boy or girl grow up into a kind and caring person.
Answer: Sports physicians have to perform complex diagnoses of injuries and problems. They also may be required to perform surgery during the course of treatment. These responsibilities require extensive knowledge and practice, so the advanced degree is necessary.
Explanation:
Answer: A.
height and amount of muscle fibers
Explanation: Height and the number of muscle fibers one has naturally are out of their control.