Explain why there are more substance on earth than are listen on the periodica table of elements

the periodic table of elements only shows the pure form of something so anything with more than one type of element in it isnt on the table like H2O

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 : )