Answer: A
Explanation:
Because its the main difference between the 2
About 20 minutes<span>Sperm can live outside of the body for only about 20 minutes
to an hour, depending on how exposed the semen is to the air and other
environmental factors. To avoid the slightest risk of pregnancy, a woman
should make sure that ejaculated semen doesn't get at all close to her
vagina.</span>
Cell theory was fdiscovered in the 17th century. but the first. cell theory was credited in the 19th century.
