How are the male and female reproductive systems similar and different?
They are the same in that most of the reproductive organs of both sexes develop from similar embryonic tissue, meaning they are homologous. Both systems have gonads (male have testes and female have ovaries) that produce gametes (testes produce sperm and ovaries produce egg or ovum) and sex organs.
The term duration refers to C. how long a workout or exercise lasts.
Explanation:
The definition of duration is "the time during which something continues." C is the only answer having to do with the time the workout continues at.
B. Placenta (works with the umbilical cord to provide nutrients to the developing human)!