Проект "Water pollution"
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proekt.pptx | 1.4 МБ |
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Eco-friend of the nature Water pollution Prepared : Santueva ValentinaСлайд 2
In the modern world nature gets great harm from people. There are Huge number of problems and water pollution is only one of them.
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Water pollution is a serious problem for the ecology of the Earth. There are 6 main causes of water pollution. waste water (сточные воды) acid rain (кислотные дожди) solid waste (твердые отходы) leaking oil (утечка нефти) thermal water pollution (тепловое загрязнение воды) uncertain sources (неопределенные источники)
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Waste waters Domestic waste waters contain detergents, which get into rivers and the sea. This affects water dwellers, and reduce the amount of oxygen water
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Acid rain Acid rains occur as a result of falling into the atmosphere of exhaust gases produced by metallurgical enterprises, thermal power plants, and other industrial enterprises and motor transport.
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Solid waste If the water is a large number of solid substances, they make it opaque to sunlight and thus impede the process of photosynthesis in the water pool
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Leaking oil Oil spilled in sea water, has many adverse effects*on sea life. First of all, the birds are dying: drowning, overheating in the sun or are deprived of food. Oil blinds the living in the water animals-seals. It can raise the temperature of the water. * неблагоприятные воздействия
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Thermal water pollution Thermal pollution of water is called thermal or nuclear plants .* * тепловые и атомные электростанции
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Uncertain sources It is often difficult to determine the source of water pollution – it can be a release of hazardous substances by the company or the pollution of agricultural or industrial work .* *Часто сложно установить источник загрязнения воды – это может быть выброс вредных веществ предприятием, или загрязнение сельскохозяйственными или промышленными работами.
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People have to deal with the pollution of the planet. Helping nature we help ourselves.
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