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Question

_____ and _____ harvesting are the two methods used to replenish groundwater.
  1. Drip
  2. Rooftop rainwater
  3. Surface runoff
  4. Sprinkle


Solution

The correct options are
B Rooftop rainwater
C Surface runoff
Replenishing groundwater is important for conserving water. Surface runoff harvesting and rooftop rainwater harvesting are the two methods that can be used for the same. Wetlands such as ponds, marshes, and paddy fields also help in recharging underground water.

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