<ul><li>The air that we breathe is part of the atmosphere, a mixture of gases which covers the earth. </li></ul><ul><li>This gaseous system is essential to support life on planet and to protect it from the sun`s harmful rays. </li></ul>
<ul><li>This complex dynamic natural gaseous system which has been functioning for millions of years is now being threatened by the human activity. </li></ul>
<ul><li>Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere. </li></ul>
Which effects does air pollution have on human beings and the environment?
Ozone depletion <ul><li>The sun`s ultraviolet rays are dangerous for the human health and for the wildlife. The layer of ozone acts like a shield which protects the earth against ultraviolet radiations which cannot reach the earth. </li></ul>
Acid rains <ul><li>Sulfur oxides and nitric oxides are turned into acids which combine themselves with the rain. Acid rains fall over lakes and forests and cause the death of animals, fish and plants. </li></ul>
Smog – urban pollution <ul><li>It is a toxic type of fog formed from gaseous primary pollutants and compounds in the chemical smog. </li></ul>
Rarely use your car! Walk, use your bike or the public transport service! What can we do to reduce air pollution?
Realized by the pupils of School number 1, Bicaz, Romania, for the Comenius Project “How schoolchildren can contribute to keeping our planet green and clean” This project has been funded with support from the European Commission. This presentation reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein. “ When we heal the earth, we heal ourselves.” David Orr