Question

How is coal extracted from the earth? Select the two correct answers.(1 point)
Responses

by hydraulic fracturing
by hydraulic fracturing

by heating and boiling it
by heating and boiling it

by surface mining
by surface mining

by underground mining
by underground mining

by drilling wells
by drilling wells

Answer 1

The two correct answers for how coal is extracted from the earth are:

1. by surface mining
2. by underground mining