Class VII

Percentage of surface of Earth which is covered by water is
  1. 70%
  2. 85%
  3. 90%
  4. 60%
Specific area where sediments, minerals and water are drained into common outlet is classified as
  1. water detachment area
  2. water catchment area
  3. water reclamation
  4. meridian area
If trees are cut down then result will be
  1. decreased transpiration
  2. increased transpiration
  3. decreased pollution
  4. decreased floods
Industrial revolution started in
  1. China
  2. Britain
  3. Germany
  4. US
Sediment amount is increased in water due to
  1. air pollution
  2. water pollution
  3. over development
  4. tree cover loss
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