C) they store energy for the cell
Answer:
They rely on the sun's heat (True)
Explanation:
( You could also use artificial heat like heating lamps but the sun's heat is what most reptiles use)
The uterine lining, or endometrium, is the internal layer of the uterus which thickens and gets filled with blood vessels in preparation to receive a fertilized egg. If this does not happen, the uterus removes this extra layer through the vagina, in a process called menstrual flow, which lasts 5 days average.
