Class VII

. Examples of water catchment area includes
  1. . Examples of water catchment area includes
  2. reservoir
  3. river system
  4. all of above
Percentage of Earth surface which is covered by oceans and seas is
  1. 50%
  2. 65%
  3. 85%
  4. 97%
Reclaimed water which have gone through initial stages of purification can be used for
  1. drinking
  2. agriculture
  3. industrial purposes
  4. both b and c
Careful management of water catchment areas results in
  1. more desertification
  2. more deforestation
  3. less waste of water
  4. more waste of water
Way of removing salt from seawater is classified as
  1. forestation
  2. desalination
  3. desertification
  4. reclamation
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