Содержание
- 2. PLAN Introduction The main problems of ecology: -air pollution -water pollution -acid rains -global warming -climate
- 3. INTRODUCTION Our planet Earth is only a tiny part of the universe, but nowadays it's the
- 4. AIR POLLUTION Air pollution is a community problem. Cars, trucks, buses and airplanes are the worst
- 5. WATER POLLUTION Water pollution Water pollution is caused by dumping wastes into lakes, rivers, and other
- 6. ACID RAINS Acid rain falls when poisonous gases from power stations and vehicles mix with oxygen
- 7. GLOBAL WARMING Global warming is the result of human activity. It is characterized by rising temperatures
- 8. CLIMATE CHANGE Global warming causes the rise of another serious problem, known as climate change. Climate
- 9. OZONE LAYER DEPLETION Ozone layer protects our planet from the sun’s harmful rays. Due to atmospheric
- 10. DEFORESTATION Our forests are disappearing because they are cut down or burnt. People clear out new
- 11. THE PROBLEM OF BIOLOGICAL VARIETY Every ten minutes one kind of animals, plants or insect dies
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