The nutrition facts label on a food package lists the following: iron 50%. what does this figure indicate?

a. the total content of this package fulfills 50 percent of the required daily amount of iron.
b. one serving from this package fulfills 50 percent of the required daily amount of iron.
c. half of this package fulfills 50 percent of the required daily amount of iron.

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.