February 25, 2017

Homework Help: Science

Posted by Heather on Monday, April 11, 2011 at 9:45pm.

We're studying coal right now, and I have to figure which is the most polluting impurity in coal which causes damage to air and water. I'm stuck between sulfur, carbon, and mercury, because they are all damaging, but for different reasons. Which do you think?

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