Knowledge acquired through the study of biology can help us combat HIV/Aids
and other sexually transmitted diseases. Explain.

can let ppl know prevention methods , signs ,symptoms and their cure

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 : )

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.