Select the correct answer from each drop-down menu.
carbohydrates are the primary source of energy for the human body.
for energy production. if
if your body lacks enzymes that break down carbohydrates, it would be unable to get
you lacked the enzyme to digest proteins, you may not absorb enough

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 : )

answer( increase) their individual contractile activity;