THE WORLD OF NATURE.

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Presentation transcript:

THE WORLD OF NATURE

People have always affected Nature People have always affected Nature. But during the last two centuries due to the development of industry human has transformed the environment radically. Satellite observations of the Earth have revealed that 60 per cent of land surface is damaged by industrial agricultural and other human activities

1. The world has over 9 million square km of forests 1. The world has over 9 million square km of forests. This is a lot of trees, and also a lot of different species of trees. But they are disappearing fast. In many of our towns there are streets or areas where the names remind us that forests have been cleared to make place for us to live. Every day we see paper and cardboard -both made from wood - being used up. We see different kinds of wood being used in fur­niture and in other ways. Every year over 100,000 sq. km of forest is so badly damaged that it is very hard for it to recover. 2. At this rate, by the time you are as old as your grandparents are now, all the forests on earth could be destroyed. In fact, the rate of destruction is increasing, so in only just over thirty years there will be very little forest left in most areas. This includes rainforests in Madagascar, Ecuador, Amazonia, Cameroon, the Himalayas and the Philippines

Development of industries often means the destruction of the natural habitat of rare plants and insects. The power stations in the UK are responsible for causing acid rain not only in Britain but elsewhere in Europe. More than 450 mln of Britain's trees are affected by acid rain.

The world is also experiencing a per­manent decline in water quality and water availability. In a lot of places water supplies are poisoned with toxic chemicals and nitrates. Waterborne diseases kill 10 million people a year.

Can we preserve the life Can we preserve the life? Can we pre­serve the quality of life necessary for future generations? When we are sick we try to take care of ourselves. There is nobody but us, humans, to take care of the Earth that is sick because of our actions. Can we do something? YES, we can. And we are the only life form that is able to destroy our life support system. But we are sensible beings and we can maintain life on Earth for the many generations to come.