The ph of acid rain would be exactly 7 exactly 14 greater than 7 less than 7

acid rain has a pH value of 4.0.

Explanation:

so less than 7

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.

2%? i tried finding the exact sorry if it's not 100% correct ; -;