Self Assessment Questions

  1. The mean temperature of the earth is approximately
    1. 10° C.
    2. 15° C.
    3. 20° C.
    4. 29° C.
  2. Soil erosion takes place due to
    1. loss of vegetation cover.
    2. excessive activities of ploughing and irrigation.
    3. natural phenomenon.
    4. All of the above.
  3. Control measures of soil erosion caused by man is/are
    1. intense plantation.
    2. less use of chemicals (herbicide).
    3. taking preventive action to reduce run off of soil with water.
    4. All of the above.
  4. Incineration is the disposal method of
    1. water pollutants.
    2. air pollutants.
    3. solid waste.
    4. All of the above.
  5. The term environment denotes
    1. only living beings.
    2. only non-living beings.
    3. both living and non-living that effect an individual organism or population at any point in the ...

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