Chloroplasts are membrane-bound organelles where what takes place in plants

i'd say that the moon rock is about 2.2 billion years old.

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 : )

my teacher would say no s