I will give brainliest and 35 points if the answer is right

That would be Nucleus, but please, correct me if I'm wrong ^^

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

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 : )