Which of the following explains why selection can cause populations of organisms to change?
a. It teaches organisms how to survive better in their environments. b. It allows some organisms to survive and produce offspring while others do not.
c. It causes changes in organisms to help them in their everyday lives.
d. It chooses certain organisms with good traits over other organisms with bad traits.

b

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 : )

what? are the statements?

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,