单选题
Global Warming
Few people now question the reality of global warming and its effects on the world"s climate. Many scientists put the blame for recent natural disasters
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the increase in the world"s temperatures
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convinced that, more than
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before, the Earth is at risk
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the forces of the wind, rain and sun. According to them, global warming is making
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weather events, such as hurricanes and
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, even more severe and causing sea levels all around the world to
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.
Environmental groups are putting pressure on governments to take action to
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the amount of carbon dioxide which is given
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by factories and power plants, thus attacking the problem at its
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. They are in favour of more money being
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on research into solar, wind and wave energy devices, which could then
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existing power stations.
Some scientists,
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, believe that even if we stopped
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carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to
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the results. Global warming, it seems, is here to stay.