What is rhe most likely explanwtion for the diffwrence in average high temperatures in july foe theae two cities?

"a.) well–developed vascular system."

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )