Our earth is our home, so if we want to protect our home we should protect our environment from harmful effects of human activity. Some of these activities cause pollution. Pollution now is a very important problem. Some of these problem are : the ozone holes, global warming ( or green-house effect), acid rain ... The ozone layer is a layer of gases which stop harmful radiation from the sun protecting the earth. Recent research shows that there …showed first 75 words of 333 total…

…showed last 75 words of 333 total…clean, we must not dump industrial waste to seas and rivers ...Now people are beginning to realize that environmental problems are not somebody else's. They make different organization, whose aim is conservation. For example " GREEN PEACE " , " FRIEND OF THE EARTH " and others. Everyday millions people from all over the world do everything to protect our environment , and they need for our help. I think we ought to help them , just to make our future better.