The stage of human fetal growth, in which cells begin to rapidly divide, follows fertilization of the egg.
a. infantile
b. fetal
c. embryonic
d. blastogenic

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

the answer is c.mitochondria. glad to .

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.