A theory is an explanation for observable events or patterns in nature... Any valid scientific theory has passed tests designed to invalidate it. (Ex: Big Bang Theory.)
A hypotheses is simply a suggested answer to a question or problem. An educated guess if you will.
This process is called Gold cyanidation, this process is also known as cyanide process, and the MacArthur-Forrest process. This process is a hydrometallurgical technique for extracting gold from low grade ore in the way that it converts the gold to a water-soluble coordination complex. This the most commonly used leaching process for extraction of gold.
Answer:
Population growth in the United States is due mainly to <em>Immigration</em>
Explanation:
United State still owns the record of the most immigrants in the world as at date, this has drastic effects on their population. Currently, measures are being put in place in order to avoid overpopulation which would optimize the population of the country.
I now chlorophyll is the main compound (or one of them) and I'm pretty sure chlorophyll is a protein so I'd pick "D".