Placer Mining Is Environmentally Damaging Because Most Methods ______________

Multiple Choice

Placer mining is environmentally damaging because most methods ______________.

A) remove large amounts of surface soil and rock, leading to wide-scale erosion
B) wash large amounts of sediments into streams, making the streams uninhabitable for many forms of aquatic life
C) inject toxic solutions deep into the ground
D) lead to acid drainage that affects nearby streams and rivers
E) create large open pits that fill up with groundwater and react with sulfides to form sulfuric acid