Question

Differentiate between surface mining and underground mining.
Differentiate between compressed natural gas and liquefied natural gas.
Justify whether minerals are truly exhaustible natural resources.
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Answer 1

Answer:

In surface mining, the ore is accessed directly from the Earth's surface, and contact is maintained with the surface throughout the operation. Underground or subsurface mining is accomplished with the help of tunnels going into the Earth, and does not occur on the surface.