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
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for recent natural disasters on the increase
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the world"s temperatures and are convinced
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, more than ever before, the Earth is at
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from the forces of the wind, rain and sun. According to
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, global warming is making extreme weather events,
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as hurricanes and droughts, even more
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and causing sea levels all around the world to
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.
Environmental groups are
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pressure on governments to take action to reduce the
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of carbon dioxide which is given off by factories and power plants,
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attacking the problem at its source. They are in
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of more money being spent 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 releasing 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.