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Environmental Issues

Short Answer Type

61. How are solid waste disposed by the use of saniitary landfills? Why is it not

Sanitary landfills are used to dispose solid wastes. In this method a depression or trench is made in the ground and wastes are dumped into it after compaction and covered with dirt everyday. The waste then left for decomposition.

Sanitary Landfills are also not really much of
a solution because the amount of garbage has increased so much that these landfills are getting filled and there is no space for the new ones. Since the waste is buried in the ground there is danger of seepage of chemicals and pollution of underground water.

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Long Answer Type

62. What measures are taken for disposal of solid wastes ?

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Short Answer Type

63. What is reforestation ?

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Long Answer Type

64.

Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

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Short Answer Type

65. A decade back, the enormous vehicular traffic in Delhi had made Delhi rank 4th among polluted cities of the world. Two measures taken by the Delhi Government brought marked improvement in air quality by 2005.
1.What were these two measures and how did they reduce air pollution ?

2. What is the norm set by Euro II for petrol and diesel vehicles ?

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