Match the various grades of coal in order from lowest grade to highest grade. (Note: First refers to lowest grade and Fourth refers to highest grade.)
A) Lignite
B) Anthracite coal
C) Peat
D) Bituminous coal
1) First (lowest grade)
2) Second
3) Third
4) Fourth (highest grade)
Answers: 1) C 2) A 3) D 4) B
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