Class VIII

90% of the total world population resides in .................. of the land area.
  1. 10%
  2. 20%
  3. 30%
  4. 40%
Species of some animals are on the verge of extinction as their population has decreased considerably. Such species are known as ..................
  1. Endangered Species
  2. Extinct Species
  3. Dying Species
  4. Dead Species
Out of the total fresh water available, nearly .................. is in the form of "ICE" and is found in glaciers in Antarctica, Greenland, mountain regions, etc.
  1. 1%
  2. 2%
  3. 3%
  4. 4%
.................. is a process in which heavy rains wash away the fertile part of the soil.
  1. Cultivating
  2. Mulching
  3. Leaching
  4. Conservation
The breaking up of rocks is known as ..................
  1. Erosion
  2. Reclamation
  3. Degradation
  4. Weathering
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