Carbonic acid is frequently created by the dissolution of atmospheric CO, into water. This is the main cause of the acidification of large bodies of water. Over the last 100 years, the pH of the oceans has gone from 8.2 to 8.1. However the pH of the oceans may decrease even further to 7.8 in the NEXT 100 years. To a layperson that may not sound so bad therefore they might say: Well it is just a decrease of 0.4, explain why this decrease is much worse than it sounds.

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.

golgi body just took the test on edge

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.