During this phase, estrogen levels increase, causing the ripening of perhaps 10 to 20 ova (egg cells) within their follicles and the proliferation of endometrial tissue in the uterus.

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

the answer is d.) homologous; have mammary glands

c. heat from the poles back down towards the equator.