Which of these is an ethical issue associated with stem cell therapy? a) impantation of stem cells into patients is unethical. b) stem cell therapy involves shutting down the immune system. c) stem cell therapy involves shutting down the immune system. d) embryos are destroyed when stem cells are obtained from them.

the eggs of the insects should be the first thing collected at the scene.

false

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 : )