What is ‘terror of Bengal’ ? from Biology Environment
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    Environmental Issues

    Multiple Choice QuestionsShort Answer Type

    41. How is air pollution responsible for changing the ill-effects of ultraviolet radiation ?
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    42. Write a note on Biological Oxygen Demand (B.O.D.).
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    43. What is organic farming ?
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    44. What is ‘terror of Bengal’ ?

    Terror of Bengal is Eichhornia crassipes or Water hyacinth) is the world’s most problematic aquatic weed. These plants grow abundantly in eutrophic water bodies and leads to imbalance in the ecosystem dynamics of water body.
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    45. What is water logging and salinity ?
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    46. List the consequences of deforestation.
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    Multiple Choice QuestionsLong Answer Type

    47. List any three laws passed by Indian government to control  pollution.

     

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    Multiple Choice QuestionsShort Answer Type

    48. Define pollution. Compare the biodegradable and nonbiodegradable pollutants.
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    49. Define pollutant. 
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    50. What is air pollution ? List various air pollutants.
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