Class VII

Percentage of surface of Earth which is covered by water is
  1. 70%
  2. 85%
  3. 90%
  4. 60%
Way of removing salt from seawater is classified as
  1. forestation
  2. desalination
  3. desertification
  4. reclamation
Process in which water is released in atmosphere by trees is classified as
  1. deforestation
  2. desertification
  3. evapotranspiration
  4. forestation
Infiltration of soil by less water is classified as
  1. rapid rate of pollutants
  2. rapid rate of runoff
  3. rapid rate of turnoff
  4. rapid rate of rainfall
Methods used for desalination are
  1. membrane filtration
  2. distillation
  3. cloud seeding
  4. both a and b
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