Explain why living organisms contain more hydrogen atoms than any other atoms, yet 65% of a typical organism’s mass is oxygen

The living organism contain more hydrogen atoms than other atoms because it is bounded with oxygen to form H2O and Oxygen has 16 times the mass than the hydrogen.

Explanation:

As we know oxygen is the most abundant molecule in human body (65%). Human body has approximately 60% of water which is composed by hydrogen and Oxygen. Other than that most of the important biological molecules like fats, carbohydrates and DNA contain hydrogen as crucial part of the structure. So hydrogen atoms are found more abundantly than other molecules.  

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.