ECOLOGY
ENVIRONMENTAL ISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The waste is from nuclear power plants
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the bodies of dead animals are thrown into the water.
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The chemicals used in fertilizers run from the fields into the river
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The exhaust fumes are from the millions of cars driven in this area of Asia.
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Detailed explanation-1: -High levels of nitrate in water can be a result of runoff or leakage from fertilized soil, wastewater, landfills, animal feedlots, septic systems, or urban drainage.
Detailed explanation-2: -Nitrogen pollution is caused when some nitrogen compounds – like ammonia and nitrous oxide – become too abundant. This pollution is sometimes the result of synthetic fertiliser use. Or, another cause is the breakdown of high volumes of animal manures and slurry – often found in intensive livestock units.
Detailed explanation-3: -Excess nitrogen from the fertilizers can cause eutrophication in the ocean, which can lead to harmful algae blooms or hypoxia-reduced levels of oxygen that create conditions in which organisms can’t survive.