During the process of photosynthesis matter is not lost, but new molecules are made. Explain how this can be true when carbon dioxide and water are both "lost" to make
glucose and oxygen.

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 : )