Which type of mining is likely the least harmful to the environment?

a.

surface mining

b.

placer mining

c.

subsurface mining

d.

none of the above

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

What is the difference between an igneous, sedimentary and metamorphic rock

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute