viernes, 3 de septiembre de 2010

cuestionario

1._What is the most commun greenhouse gas emmited from human activities?
               R:The dioxide carbon and methane

2_Do you think greenhouse gases in the atmosphere are always bad for humans and the environment?
    R:No because they are of big importance in the planet

3_ In which of the following ways  do people increase the concentration of the        greenhouse gases in the atmosphere and why?
   a)Cutting down trees    b)Driving gasoline-powered automobiles
   c)Burning coat to create electricity  d)All of above
              R: Because all this provoque the global warning

4_Why greenhouse gases cause global warning and explaint it?
    a)Absorbing and reradia ,ting heat from infrared rays
    b)Causing the atmosphere to catch fire
    c)Absorbing the water in the atmosphere
    d)Reflecting solar rays
    R:Because the pollution is more frequent by it warmed the land superface.

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