Humans use the fossil fuels and release the carbon into the air. Starts with Nitrogen in the atmosphere. ... The runoff of the nitrogen into the surface water is that it destroys all the oxygen build up in the water, called Eutrophication. The Phosphorus Cycle starts with the weathering of rocks.
B. Who is used as a subject and C. Whom is used as an object are the correct answers when it comes to determining whether to use who or whom in a relative clause.
I believe the answer is c
<span>Three months after fertilization and development of a placenta around the developing fetus, the corpus luteum regresses and forms the corpus albicans.</span> Formed placenta takes over progesterone production (which was the role of corpus luteum) and the corpus luteum degrades into a corpus albicans. The corpus luteum is being broken down by macrophages, in a process called luteolysis. The remains of the corpus albicans may persist as a scar on the ovary.