Answer:
Protein
EXPLANATION:
All of these substances are produced from protein metabolism.
ANSWER.
Explanation:
when one of the links in the food chain is no longer present the food chain breaks.sometime this can cause other animals in the food chain to disapper as well and the whole ecosystem can beome in balance or even colapse
Secretion of human chorionic gonadotropin [HCG] only occur during pregnancy in the placenta. The concentration of this hormone increase rapidly during the first three months of pregnancy; the amount in the blood stream doubles every two to three days as the development of the placenta and embryo progress. The hormone reaches its maximum concentration peak around the sixth week of pregnancy and after this, its concentration decline.
