Answer:
So that plant life doens't die out.
a) There are four kinds of coal depending on their carbon content. ⇒ False
b) Coal is usually found in liquid state. ⇒ False
c) Fossil fuels are the result of the descomposition of plants and animals from the past. ⇒ True
d) Petroleum is the cheapest source of energy.⇒ True
The FDA seal of approval is NOT a source to ensure quality of a dietary supplement. The answer to your question is C. I hope this is the answer that you are looking for and it comes to your help.
i think it’s the last one on question number one, and the first one on question two.