What Is Coal Made out of?

Answer

Coal is made out of remains of trees and plants from a million years ago. They sank into the ground and were pressed under layers of rock and other materials. This is why they have to be dug out since they are so useful not only as fuel.
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1 Additional Answer
Coal is a black rock that is found in many regions in the United States. Hydrogen, oxygen, different amounts of sulfur, carbon, and nitrogen make up coal. You can find more information here: http://www.energyquest.ca.gov/story/chapter08.html
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