56. The ecological foot print is a measure of ecological inpact of
    1. comsumption of food, forest products and other resources
    2. deforestation
    3. land use for roads, buildings, power plants and garbage dumps.

1. 1. 1 and 3

   
   
   

   2. 2 only

   
   
   

   3. 1, 2, and 3

   
   
   

   4. 3 only

   
   
   

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   NA

   Correct Option: C

   NA

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57. Following is the most widely discussed impact of climate change

1. 1. Increase in average sea level

   
   
   

   2. Deforestation

   
   
   

   3. Soil erosion

   
   
   

   4. None of the above

   
   
   

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   NA

   Correct Option: A

   NA

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58. When did the last female alpine ibex disappear in France ?

1. 1. 1980

   
   
   

   2. 2000

   
   
   

   3. 2010

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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59. Genetic diversity in agricultural crops is threatened by

1. 1. Introduction of high yielding varieties

   
   
   

   2. Intensive use of fertilizers

   
   
   

   3. Extensive intercropping

   
   
   

   4. Intensive use of biopesticides

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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60. What is the main cause for the extinction of some species in tropical forest ?

1. 1. Deforestation

   
   
   

   2. Afforestation

   
   
   

   3. Pollution

   
   
   

   4. Soil erosion

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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