What base is ALWAYS a force out in softball

The structure shared between the male reproductive system is the

Cardiac output is affected by heart rate exercise stroke volume all of the above

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.