What is the connection between macromolecules and biogeochemical cycles?

All of the atoms that are building blocks of living things are a part of biogeochemical cycles. The most common of these are the carbon and nitrogen cycles. Tiny atoms of carbon and nitrogen are able to move around the planet through these cycles.

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 : )

sex cells are usually half's then they find another half and make a fertilize egg