Can copper turn rocks green

Additional Information. Unique color and crystal habits; green, blue, and black tarnish; and great malleability and ductility. Most common in volcanic basalt rocks, often near the level of contact with sedimentary rock layer.

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.