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When compared to underground mining, why does surface mining have a larger impact on land ecosystems?(1 point)

Responses

In surface mining, the overburden is less extensive.
In surface mining, the overburden is less extensive.

In surface mining, the land collapses easily after mining is complete.
In surface mining, the land collapses easily after mining is complete.

In surface mining, large areas of land are completely cleared of vegetation and topsoil.
In surface mining, large areas of land are completely cleared of vegetation and topsoil.

Surface mining is more likely to contaminate area waterways.
Surface mining is more likely to contaminate area waterways.
Question 2
What environmental impact is caused by both surface mining and underground mining?(1 point)
Responses

destruction from overburden
destruction from overburden

sinkhole formation after mining is complete
sinkhole formation after mining is complete

release of underground gases
release of underground gases

local water contamination
local water contamination
Question 3
Which statement is true about the potential environmental impact on local water by both surface and underground mining?(1 point)
Responses

Both types of mining cause high risk of sediment runoff.
Both types of mining cause high risk of sediment runoff.

Both types of mining can cause acid and heavy metals to get into local water.
Both types of mining can cause acid and heavy metals to get into local water.

Both types of mining lead to overburden clogging small local waterways.
Both types of mining lead to overburden clogging small local waterways.

Both types of mining can lead to a lowered water table

1 answer

Here are the correct responses for each question:

Question 1: When compared to underground mining, why does surface mining have a larger impact on land ecosystems?

  • In surface mining, large areas of land are completely cleared of vegetation and topsoil.

Question 2: What environmental impact is caused by both surface mining and underground mining?

  • local water contamination

Question 3: Which statement is true about the potential environmental impact on local water by both surface and underground mining?

  • Both types of mining can cause acid and heavy metals to get into local water.

These answers reflect the typical environmental impacts associated with each type of mining.