Описание презентации по отдельным слайдам:
Our fragile planet Made by Olga Goryuhina Form 6 c
Our planet is very fragile. It is like glass and it can be broken easily. And now it faces some global environmental problems
Three Hundred years ago, man lived much closer to nature. He couldn’t do harm to nature as he does today.
Environmental problems Shortage of natural resources The growth of population Ozone holes Destruction of wildlife Pollution land water nuclear air Shortage of species of animals and plants Deforestation
Let me start with a few words about air pollution. It is a very serious problem, especially for our town. This has a great influence on people’s health.
What causes air pollution? Air pollution is a result of both human and natural actions. forest fires volcano eruptions natural radioactivity. Natural events that pollute the air Humans actions that pollute the air Burning fossil fuels Factory’s wastes Cars and other transport Cutting trees Motor gasses Combustion oils of cars Refrigeration
If people don’t solve the air pollution problem they will be similar to this man in this picture In Cairo breathing the air is very dangerous for life. it means that the person smokes two packs of cigarettes per day. The same is true for Mexico City and 600 cities of the former Soviet Union. Interesting!
Water pollution and its causes There are many reasons that causes water pollution but the major reasons are: Dumping industrial and nuclear wastes Is oil transmitting and ship crashes
It is interesting! People in Africa cannot drink clean water; their children die because a the most part of our water has been polluted. Children in Kenya often have to go many kilometers to collect drinking water. Every 10 years about 46000 tons of radioactive wastes and about 3-8 million tons of oil are poured into oceans, seas and rivers Water pollution kills fish and sea animals
Deforestation Deforestation is the destruction of forested lands. Forests are cut down for many reasons, but most of them are related to money or to people’s needs.
Ozone holes The ozone layer is a deep layer in the stratosphere. The ozone layer in the upper atmosphere protects humans and other organisms from ultraviolet radiation from the sun.
Nowadays people begin to realize that environmental problems are their own problems. In conclusion, if we want to be healthy, to drink clean water and to breathe fresh air, we should take care of fragile Earth.
Let’s save our fragile planet!
Thank you for listening
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