How do hot fluids act in metamorphism? .

Hot fluids interact with the preexisting rocks or crystallize and precipitate the minerals.

Explanation:

Metamorphism is the change of the structure or composition of a rock by pressure, heat, or other natural agency. Hydrothermal metamorphism occurs chemically active when hot, hydrothermal fluid or solution interact with surrounding preexisting rock.

The magma or hot fluids crystallizes the hydrothermal solution is driven off into the surrounding rock where it exudes into pores and cracks precipitating the minerals.

In oceanic hydrothermal metamorphism magma drip out onto the ocean floor to form pillow Basalts.

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.