1 destruction from overburden
4 destruction of ecosystems
What environmental impacts are caused by both surface mining and underground mining? Select the two correct answers. (1 point) Responses
1 destruction from overburden destruction from overburden
2 release of underground gases release of underground gases
3 sinkhole formation after mining is complete sinkhole formation after mining is complete
4 destruction of ecosystems destruction of ecosystems
5 local water contamination
1 answer