Answer: The answer is, use of fertilizers (manure) in farming this is on study island
Explanation:
Answer: A mutualistic and A a decrease in the number of corals, so buy coral to help the local economy
Explanation:
Answer:
Atoms combine when their electrons are shared or transferred
Answer: Earth's seasons are caused by it's tilt on it's axis :)
Explanation:
There are two oxygen atoms. The OH is in parentheses with the 2 after it to indicate that there are two OH molecules, each containing on atom of oxygen.