HELP PLEASE IF I GET IT WRONG I GET EVERYTHING WRONG Which of the following is an example of a micro-habitat?

a
Abuela's vegetable garden on her huge farm
b
Ms. Steinmann's 200 gallon fish tank
c
woods behind the school
d
the algae growing on a seashell where tiny sea animals called plankton live

the answer is "a.) well–developed vascular system."

explanation:

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 : )