6. which of the following is a water ontaminant that can cause acid mine
drainage
a flux
c. methane
d. sulfuric acid
b. carbon dioxide
7. subsidence can result from the collapse of
quarrie
e. rocks that once held minerals.
d. placer deposits.
b. pillars i
8. surface
ng can cause
4. only air pollution.
b. only noise pollution.
c. both air and noise pollut
d. neither air nor noise pollut
9. which of the follow ng is not a regu
mining companies must
follow?
a. the clean water act
b. the hazardous products act
c. the safe d drinking w ater act
d. the endangered species act
10. what can contan
ate a river as a result of dredging?
a. potash
c. placer deposits
d. muddy sediments
b. seawater
mirnia
(dougal envi
ental science
mining and mineral res