Could someone help me out with this Ch 2.1- The Nature of Matter

8. hydrogen bonds are a form of _ interactions, where _. onds with an _ atoms or _ atoms of a neighboring _

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 : )