Презентация на тему "Ecological Problems. Natural disasters"

Содержание

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  Ecological Problems. Natural disasters

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  Natural disasters

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  “Eco” means “home" in Latin language. It’s a science about our mutual home – about nature. Science, which teachers us to treat very carefully to our homeland. What does it mean “Eco”?

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  Environment – is surroundings we live in.

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  Ecological problems

  Air pollution Waterpollution

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  Soil pollution Famine

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  Air pollution is a very serious problem, because polluted air can cause illness and even death. Every year world industry pollutes the atmosphere with about 1500 million tons of dust and other harmful substances. Many cities suffer from smog, the oxygen balance upsets. Cars are polluting the air by exhaust gases and other dangerous chemicals.

  Air pollution

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  Virtually not only human beings pollute the air but nature itself can cause damage,for example volcanic eruptions. But the consequences after volcanic eruptions aren’t so harmful as human beings , in contrast to human activities, these processes are always reversible – thought after a while the atmosphere will recoverin formerstructure.

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  Water pollution

  Water recourses is one of the main factor of existing life in our planet. People use fresh water for their needs.It is more than 2% of hydrosphere volume. First of all water pollution is the result of industrial, agricultural and everyday necessities discharge of wastes into rivers, lakes and seas. The main part of water pollution plays a large number of oil industry wastes.

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  The main component of the Earth biosphere represents topsoil.Soil is polluted by: litter, wastes, heavy metals, pesticides, radioactive elements.Sinking aerosol may contain heavy poisonous metals and it may lead to plants’ ruin.

  Soil pollution

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  Modern ecological problems

  Greenhouseeffect

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  Acidrains

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  Ozon layer

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  Global warming

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  Ways of solving ecological problems Creation of different kinds of purification plants; Recycling.

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  III. Using of conservation technologiesand rational distribution of industry. Creation of purification territorial systems.

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  Look how beautiful our planet can be!

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  Prepared Pupil 10-A class Sarny Lyceum "Leader“ZhuchenyaKateryna