The greenhouse effect results in warmer temperatures near thesurface because clo

Question

The greenhouse effect results in warmer temperatures near thesurface because
      clouds trap infrared radiation near thesurface.
       some of the energy thatwould ordinarily escape is re-radiated toward thesurface.
       carbon dioxide and watervapor trap infrared radiation.
       carbon dioxide molecules donot permit radiation to escape.


When water vapor in the atmosphere condenses to liquidwater,
       dew falls to theground.
       it rains orsnows.
       a cloud forms.
       all of these arecorrect.

An airplane flying coast to coast might reach an altitude of about35,000 feet. This is above about what percent of Earth'satmosphere?
       50%
       75%
       90%
       99%

Explanation / Answer

The greenhouse effect results in warmer temperatures near thesurface because       clouds trap infrared radiation near thesurface.        some of theenergy that would ordinarily escape is re-radiated toward thesurface.        carbon dioxide and watervapor trap infrared radiation.        carbon dioxide moleculesdo not permit radiation to escape. When water vapor in the atmosphere condenses to liquidwater,        dew falls to theground.        it rains orsnows.        a cloudforms.        all of these arecorrect. An airplane flying coast to coast might reach an altitude of about35,000 feet. This is above about what percent of Earth'satmosphere?        50%        75%        90%        99%

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