GEOLOGY

EARTH SCIENCE

GROUNDWATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which human activity leads to subsidence?
A
using toxic chemicals
B
filtering out pollutants
C
storing drinking water above ground
D
excess removal of water from underground reservoirs
Explanation: 

Detailed explanation-1: -Pumping water out of the ground at a faster rate than it is replenished over the long-term causes similar problems. Groundwater depletion is primarily caused by sustained groundwater pumping.

Detailed explanation-2: -Subsidence-sinking of the ground because of underground material movement-is most often caused by the removal of water, oil, natural gas, or mineral resources out of the ground by pumping, fracking, or mining activities.

Detailed explanation-3: -Stressors that affect ground water condition include application of pesticides and fertilizers to the land, waste from livestock and other animals, landfills, mining operations, and unintentional releases such as chemical spills or leaks from storage tanks.

Detailed explanation-4: -Land subsidence occurs when large amounts of groundwater have been withdrawn from certain types of rocks, such as fine-grained sediments. The rock compacts because the water is partly responsible for holding the ground up. When the water is withdrawn, the rocks falls in on itself.

Detailed explanation-5: -The two main causes of Depletion of Water Table are Deforestation and Over-pumping of groundwater.

There is 1 question to complete.