86. Which of the following is not one of the major environment problems resulting from human interference in the nitrogen cycle ?

1. 1. Eutrophication

   
   
   

   2. Nitrous oxide release increases global warming

   
   
   

   3. Increased acid rain

   
   
   

   4. Stratospheric ozone depletion

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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87. Consider the following statements
    1. Biodiversity is normally greater in the lower latitudes as mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes.
    Which of the statements given above is are correct ?

1. 1. 1 only

   
   
   

   2. 2 only

   
   
   

   3. Both 1 and 2

   
   
   

   4. Neither 1 and 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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88. Biosphere reserves differ from national parks and wildlife sanctuaries because in the former

1. 1. Human beings are not allowed to enter

   
   
   

   2. People are an integral part of the system

   
   
   

   3. Plants are paid greater attention than than animals

   
   
   

   4. Living organisms are brought from all over the world and preserved for posterity

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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89. Which one of the following pairs of geographical areas show maximum biodiversity in our country ?

1. 1. Sunderbans and Rann of Kuntch

   
   
   

   2. Eastern ghats and West Bengal

   
   
   

   3. Eastern Himalaya and Western ghats

   
   
   

   4. Kerala and Punjab

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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90. In which of the following the maximum plant diversity is found

1. 1. Tropical evergreen forests

   
   
   

   2. Tropical moist deciduous forests

   
   
   

   3. Sub tropical mountain forests

   
   
   

   4. Temperate moist forests

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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