The Greenhouse Effect

http://climate.nasa.gov/causes/

A layer of greenhouse gases – primarily water vapor, and including much smaller amounts of carbon dioxide, methane and nitrous oxide – act as a thermal blanket for the Earth, absorbing heat and warming the surface to a life-supporting average of 59 degrees Fahrenheit (15 degrees Celsius).

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Date Of Record Release	2011-03-03 20:30:15
Description	A layer of greenhouse gases – primarily water vapor, and including much smaller amounts of carbon dioxide, methane and nitrous oxide – act as a thermal blanket for the Earth, absorbing heat and warming the surface to a life-supporting average of 59 degrees Fahrenheit (15 degrees Celsius).
Classification	Climate and Meteorology -- Climate Change Climate and Meteorology -- Research Education and Training Resources -- Texts, Manuals, Other Media -- Air and Climate
Resource Type	Curriculum Guide/Report/Fact sheet
Format	Text
Subject	Climatic changes--Study and teaching Carbon dioxide Climatic changes--Research Atmospheric carbon dioxide--Environmental aspects Climate--Study and teaching Arctic
Source	National Aeronautics and Space Administration (NASA)
Keyword	Graph, Arctic, Sea ice, Carbon dioxide, Sea level, Global temperatures, Land ice
Selector	Selection Committee
Date Of Record Creation	2011-03-03 20:16:05
Education Level	High School (9-12) College Technician/Professional/Faculty College (13 - 14) College (15 - 16) College - Graduate Level
Date Last Modified	2011-03-03 20:30:15
Language	English

Date Record Checked: 2011-03-03 00:00:00 (W3C-DTF)

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