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Tomorrow's weather
(Sent by Jorge Redondo, a student from Valencia, Spain)

Some experts predict that in the year 2020 there will be about 7 billion people on this planet. If they are right, then there will be more factories, cars and intensive farming. And that means more harmful gases which will increase the greenhouse effect. These gases absorb the sun's heat and make the earth hotter.

If things continue like this, some scientists predict that in 2030 the earth will be 2º to 4ºC hotter. In general, the weather will probably be cloudier and wetter and some areas will be more fertile and better for farming.

But some of the changes will not be possitive: other areas will be drier and there will probably be more storms, floods and other natural disasters.

These changes will affect averyone - everywhere.

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