What is organic farming ? from Biology Environmental Issues

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 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 ?


Organic Farming is a cyclical, zero-waste practice, where waste materials produced from one process, are used as nutrients or raw materials for the other processes. This allows the maximum utilisation of the resources, increases the efficiency of production and reduces the cost. It is a method of farming system which primarily makes use of organic wastes (crop, animal and farm wastes, aquatic wastes) and other biological materials along with beneficial microbes (biofertilizers) to release nutrients to crops for increased sustainable production in an eco friendly pollution free environment.
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44. What is ‘terror of Bengal’ ?
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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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