Answer:
Human chorionic gonadotropin
Explanation:
Human chorionic gonadotropin is a hormone produced after the implementation with the function to promote the maintenance of the corpus luteum during the beginning of pregnancy. This is important because hormones produced by corpus luteum, such as progesterone enrich the uterus with f blood vessels so that it can sustain the growing fetus.
Human chorionic gonadotropin is often used in pregnancy tests, since its presence indicates pregnancy.
<span>The building from the list provided with the highest likelihood of air pollution is a tightly sealed house with an unvented water heater. The school with leaks will let air exchange happen so that isn't it, and having a carbon monoxide detector only reports existing air pollution it doesn't prevent air pollution, it could have issues but we don't know. The tightly sealed house with the unvented water heater is a near sure thing.</span>
Answer:
D. all the sunshine in a lake
