Why are the Miller-Urey experiments essential to the theory of evolution? They showed that life can only come from life. They showed that electricity can create life. They showed how organic molecules could be made from Earth's early atmosphere. They showed the role that natural selection played in the evolution of modern day organisms.

i dont know this but ask your teacher for !

i believe the answer is c

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.