Without amniotic fluid, the developing embryo would be a. oxygen-deprived inside the uterus.
b. malnourished.
c. immobile.
d. injured from a lack of cushioning.

Which are reasons cells undergo cell division?

The hypothesis that evolution occurs at an irregular rate through geologic time is known as: directional evolution directional equilibrium punctuated equilibrium punctuated evolution

Animal cells have which of the following characteristics? select all that apply.