The Greenhouse Effect
Beginning of paper
, in environmental science, is a popular term for
the effect that certain variable constituents of the Earth's lower atmosphere
have on surface temperatures. These gases--water vapor (H2O), carbon dioxide
(CO2), and methane (CH4)--keep ground temperatures at a global average of about
15 degrees C ....
Middle of paper
.... a major rise in sea level, along with
other severe environmental agitation. An example of a runaway greenhouse effect
is Earth's near-twin planetary neighbor Venus. Because of Venus's thick CO2
atmosphere, the planet's cloud-covered surface is hot enough to melt lead.
Water vapor is an important "greenhouse" gas. It is a major reason why
humid regions experience less cooling at night than do dry regions. However,
variations in the atmosphere's CO2 content are what have played a major ....
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Word count: 604
Page count: 3 (approximately 250 words per page)
