ارجو منكم الــــــــــرد بسرعــــــــــــــــــــــــــــــــــــــة

[smart4u]

Pollution is considered the biggest problem of this age. There are
several kinds of pollution that make life difficult, unhappy and unhealthy.
The first kind is the most dangerous one which is air pollution. It is
caused by factories and cars sending out carbon dioxide and carbon mono oxide and other harmful gases. Thus, the ozone layer is getting ruined gradually. This kind is commonly
found in industrial and big cities. In such cities, air is neither clean nor
healthy. It is also caused by the cutting down of trees that are considered to be the natural factories of Oxygen.
The other kind of Pollution is water pollution .Factories get rid of chemicals by throwing them into
seas and rivers Therefore, water gets polluted and is no longer potable... Many countries work hard to stop pollution and they have achieved a considerable progress. Air and
water on their cities have become much cleaner. They now breathe and drink
fresh and healthy air and water.