An individual with type o blood reproduces with an individual with type ab blood. what percentage of the offspring would be expected to have type o blood?

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

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 : )