Green beetles survive because birds don't see them, whereas brown beetles get detected. this is an example of which mechanism of microevolution?

explanation:

plz give me the characteristics.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

ya the other dude is right

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?