alleryThe technique of collecting and storing rainwater so that it percolates underground to recharge the groundwater is known as:
ARainwater harvesting
BHydraulic fracturing
CSewage treatment
DSanitary landfilling
Answer & Solution
Correct answer: A. Rainwater harvesting
1. The text defines collecting and storing rainwater for future use, with the aim of recharging the groundwater level, as rainwater harvesting.
2. Hydraulic fracturing extracts shale gas, sewage treatment cleans wastewater, and landfilling disposes solid waste, so B, C and D are traps.
3. Hence the answer is A.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Environmental Management", p.329_
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