Which phrase names a direct result of hydrogen bonding? A .the polar ends of a water molecule
B .movement by osmosis
C .cohesion and adhesion
D. the bent structure of a water molecule

d

explanation:

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.