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Subjects
Social Science
Class 7
Resouces
7.
Coal resources
Exercise condition:
3
m.
Choose the best
Answer
1.
300
50
10
million years ago much of the earth is covered by swamps.
2.
The process of conversion of peat into coal is called
Carbonization
.
3
.
Electricity produced by burning coal is called
Hydro Power
Geothermal Power
Thermal Power
.
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