What Is Coal?

1.	What Is Coal?
Answer» The remains of TREES and SHRUBS grew MILLIONS of YEARS ago, when the weather was mild and moist. The remains of trees and shrubs grew millions of years ago, when the weather was mild and moist.

Answer»

The remains of TREES and SHRUBS grew MILLIONS of YEARS ago, when the weather was mild and moist.

The remains of trees and shrubs grew millions of years ago, when the weather was mild and moist.

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