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प्रश्न
What is the effect of pollution on soil?
उत्तर
Soil is the foundation of a healthy biosphere. Precipitation from air as acid rain and dry deposition of pollutants on land surface contribute to soil pollution. Pollutants combine with plant nutrients and are consumed by animals. Polluted soils unfavourably affect the microbial environment resulting in reduction in mineralization and decomposition processes. Soil fertility and aeration are also reduced, earthworms, nematodes, etc., are destroyed by toxic chemicals.
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संबंधित प्रश्न
List two major harmful effects of the following:
Pesticides such as DDT used in agriculture.
How is soil pollution caused?
Two chemical fertilizers.
A free living bacteria which helps in nitrogen fixation.
A symbiotic bacteria.
Give Technical Terms:
The pollution chiefly due to use of pesticides in agriculture
Give Technical Terms:
Bacteria breaking down dead organisms to liberate nitrogen.
Mention any four sources of soil pollution.
Write short notes on soil pollution by:
Pesticides
Flyash and metallic ash are examples of urban domestic waste.