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Keshav Singh

· started a discussion

· 1 Months ago

wrong (Question: 270601.4 )

it should be option c

Question:

Directions: You have brief passages with questions following each passage. Read the passages carefully and choose the most appropriate answer to the questions out of the four alternatives.


The destructive process of Mountain Top Removal mining (MTR) has caused permanent damage to Appalachia. Although the law requires that mining companies restore the mountaintops after the mining has been completed, the 1.5 million acres of mountains that have already been removed cannot be re-grown, re-built, or replaced. The companies do secure the rock formations to prevent erosion and landslides, but their efforts cannot recreate the once beautiful mountain landscape. Furthermore, while companies are usually vigilant about securing the rock formations, they seem less interested in restoring the native vegetation. MTR operations clear enormous tracts of forest. Environmental hazards are not only created in preparing a mountaintop for mining, they also continue once the coal has been extracted. After the blast, the excess mountaintop – which miners refer to as “overburden” – is usually dumped into nearby valleys or streams. The overburden contains a variety of toxic substances, including explosive residue, silica and coal dust.

After the MTR operation, the mining companies-

Options:
A)

Restore native vegetation

B)

Replace the mountaintops

C)

Secure rock formations to prevent corrosion

D)

Beautify the mountains        

Solution:

Ans: (a) Restore native vegetation

mahesh yadav

· commented

· 1 Months ago

there is corrosion in option b and rocks never get corrosion.

Anuj Hatoneya

· commented

· 1 Months ago

yes! should be C!
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