Since we can’t drink ocean water due to its salt content, why is polluting the oceans so much a concern for people?

Explanation: because animals such as bear get the food from fish by polluting the ocean you first kill of fishes and the bear who need those animals to survive

enzyme speed up the reactions

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.