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.
Answer:
The climate of Antarctica was probably much warmer in the past than it is today.
Explanation:
There are little things living there now. Coal takes millions of years to form. There must have been much more living things there in the past (when it was warmer) to make coal.
D is the answer....tornado damage can not be used to determine both the weather and climate of a region
He was one of the first scientists to understand that new scientific information comes from repeated experiments, and one of the first to incorporate math and science together. He revolutionized the method research was obtained by scientists.
True
Explanation: I just got it right on edgenuity
