EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heavy rains caused oversaturation of soil foundations.
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Overbuilding in the area polluted the ground water.
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Runoff from fertilized land created a dead zone
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Excessive removal of water weakened the ground.
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Detailed explanation-1: -A neighborhood in a small Texas town had to be evacuated because the houses were sinking due to a problem in the aquifer. What is the most likely cause of this problem? Heavy rains caused oversaturation of soil foundations.
Detailed explanation-2: -Industrial discharges, urban activities, agriculture, groundwater pumpage, and disposal of waste all can affect groundwater quality. Contaminants can be human-induced, as from leaking fuel tanks or toxic chemical spills.
Detailed explanation-3: -How does the agricultural activity most likely affect the surface water of the area? Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants. Excess drop material accumulates in the riverbanks, slowing the movement of the river water.
Detailed explanation-4: -When fertilizers enter surface water, they cause problems in the watershed by-clogging narrow streams and preventing water from flowing properly.
Detailed explanation-5: -Pollution originating from a single, identifiable source, such as a discharge pipe from a factory or sewage plant, is called point-source pollution.