Ecological Problems презентация, доклад

Слайд 1Ecological Problems
Pollution and protection of our environment

Слайд 2People have always polluted their surroundings. Even in ancient times

people admitted that their health was depending on the state

of surroundings. But only in XX century humanity, in full measure, realized , that many diseases are closely connected with the air and water pollution and inferior products.

People have always polluted their surroundings. Even in ancient times people admitted that their health was depending

Слайд 3Ecological problems
air pollution
water pollution
soil pollution

Слайд 4Air pollution.
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.Air pollution is a very serious problem, because polluted air can cause illness and even death.

Слайд 5

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 recover in former structure.

Virtually not only human beings pollute the air but nature itself can cause damage,for example volcanic eruptions.

Слайд 6Water 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.