Which specific refrigerant has the highest global warming potential (gwp) of all the common refrigerants?

Solution:

Opteon is the specific refrigerant has the highest global warming potential (gwp) of all the common refrigerants.

The Opteon™ family of low global warming potential (GWP) refrigerants were specifically developed to reduce environmental impact without sacrificing performance.  

From automotive air conditioning to commercial refrigeration, OEMs and end users trust the Opteon™ portfolio to meet their needs:

"a.) well–developed vascular system."

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.