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
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.
Слайд 5Water 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.
Слайд 6Soil pollution
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.
Слайд 7Modern ecological problems
Greenhouse effect
Acid rains
Ozon layer
Слайд 8Ways of solving ecological problems
1.Creation of different kinds of purification plants
2.Recycling
3.Using of
conservation technologies and rational distribution of industry
4.Creation of purification territorial system