Explain how the elimination of a predator from an ecosystem might result in starvation amongst its prey species.

Predators are good because they eliminate overpopulation. For example, owls hunt mice and therefore there isn't too many mice. If there weren't any predators than there would be too many of the prey and there wouldn't be enough food for them all. hope it helps.

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.

a physical change is being made.