Ozone is a form of oxygen. It differs from the oxygen that consists of 3 atoms (oxygen - 2). The ozone layer is located at a height of 15 to 25 kilometers above the Earth's surface. The presence of the ozone layer is very important. It protects life on Earth from the harmful effects of ultraviolet radiation from the Sun. But the surplus may adversely affect the health of humans and other living beings.
On the state of the ozone layer is affected by the oxides and perchloromethane. The oxides contained in the exhaust gases of a supersonic aircraft, which fly close to the ozone layer, cars, and pillars of smoke over numerous businesses. Perchloromethane are contained in cans, aerosol containers, which are widely spread.
The oxides contained in the columns of smoke over the numerous businesses that negatively affect the state of the ozone layer.