The main cause of extinction on Earth today is, Humans, we are the biggest
threat to our environments'.
Hope that helps!!!! ( We Humans, are our biggest enemy, and threat to ourselves, and he environment.).
Answer:
Prolactin is the hormone that controls the production of breast milk. Prolactin is also responsible for triggering the hormones to begin ovulation and allow the eggs to grow and mature properly. If your Prolactin levels are out of whack, it can be difficult for you to become pregnant.
Explanation:
