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Paragraf Tamamlama 69. Soru

Bu Testin Birincisi Bengu

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69.

……….. . Known as fossil fuels, they took about 250 million years to form, and although new coal and oil are being formed in parts of the world, this happens very slowly, so the coal and oil now being extracted at an extremely fast rate are not being replaced. This means that alternative energy sources must be found and developed.

In many parts of the world it Is still very difficult to keep warm in the winter

Coal production was reduced in Britain because of the life-threatening smogs of the 1950s

When we bum coal, we are actually reproducing sunlight which nurtured plants and animals millions of years ago

Before its dangers were fully realised, nuclear power was once thought to be the key to future power supplies

Man's principal energy supplies coal and oil are unable to reproduce themselves