RNA makes a copy of a gene from DNA to mRNA .
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:
uh well i can guess for you because i think i know,
1. physical change
2. water if heated up can change into a gas.
3.yeah
4.because the two hydrogen or whatever mixed with the one oxygen or whatever created two whatever
im pretty big brain as you can tell.
Explanation:
I’m not sue u can just loook it up on the Internet