Which type of mining is likely the least harmful to the environment?a.surface miningb.placer miningc.subsurface miningd.none of the above
Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem.
What is most likely to happen to an abandoned strip mine over time?a.The strip mine is likely to completely recover over time.b.The strip mine is likely to remain exactly as it is left when abandoned.c.The strip is likely to partly recover, but never return to its original state.d.The strip mine is likely to become a lake.
What is the most likely consequence of open pit mining on plant life?a.a dramatic reduction in the variety of plant speciesb.an increase in the number of plant speciesc.the complete loss of plant life in the area occupied by the surface mined.a temporary decrease in plant populations
A mineral is a naturally occurring solid with a regular, repeating structure.
Which of the following is a long-term consequence of mining on the Earth? a. erosion b. an open pit c. sedimentation d. all of the above Please select the best answer from the choices provided
Mining has only short-term effects on the Earth.
What are the two types of minerals?a.industrial and environmentalb.valuable and invaluablec.metallic and nonmetallicd.important and unimportant
Which of the following methods of extraction is the most damaging to the environment?a.surface miningb.subsurface miningc.placer miningd.none of the above
Which of the following readings is used to determine the availability of minerals?a.radioactivityb.magnetismc.gravityd.all of the above
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