Презентация по английскому языку Проблемы окружающей среды

Work of Ryazantzeva Yana form 8 BEcological problems Our environment is constantly changing. This is the fact we cannot deny. The way technological progress influences the environment is not the most favourable.Today humanity is facing numerous environmental problems. If we do not pay attention to these problems right now, we may face even bigger natural disasters in the future. Pollution is one of the biggest problems. Plants and motor vehicles are number one pollutants. Their harmful emissions pollute the environment. Oil spills and acid rains make the World Ocean dirty.Pollution Global warming is the result of human activity. It is characterized by rising temperatures of the oceans and earth’s surface causing rise in sea levels and melting of polar ice cover. Apart from that, floods, desertification and excessive snow are also signs of global warming.Global warming Global warming causes the rise of another serious problem, known as climate change. Climate change can lead to the development of other harmful effects in our life, such as occurrence of new diseases and change in seasons.Climate change Today forests cover about 30% of land. Every year this figure decreases more and more. People clear out new territories for residential buildings, new plants and factories. We must realize that deforestation causes the extinction of animals and plants.Deforestation Ozone layer protects our planet from the sun’s harmful rays. Due to atmospheric emissions of the so-called CFC’s, the ozone layer depletes. This results in occurrence of the holes in the ozone layer. Today CFC’s are banned in many industries. However, we must remember that if this problem is not taken under control, harmful rays of the sun will easily penetrate the atmosphere. The biggest hole in the ozone layer is located above the Antarctic.Ozone layer depletion Thank you for attention