Question

which is a type of mining where mountaintops are blown off and the resource is extracted?

mountaintop removal

subsurface mining

strip mining

placer mining

Explanation:

Mountain - top removal mining is a type of surface mining where mountaintops are blown off to access coal seams. Subsurface mining involves digging tunnels or shafts into the earth. Strip mining removes layers of soil to access minerals near the surface. Placer mining extracts minerals from sediments.

Answer:

mountaintop removal