Write a 2-4 sentence summary of the article "Erosional Features." Be sure to include the following key terms: topographic map, satellite image, contour
lines, elevation.

i think it is dna, i'm not totally sure but i think it might be.

atp is used for energy.

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 : )

a and c are the answeres