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Dr. Johnson's Earth Science Page

Global Climate Change Permafrost	Global Warming Information

Presentation Files	Global Warming
Biosphere	Greenhouse Effect
Lithosphere	Living in a Greenhouse
Hydrosphere	Climate Change and Polar Regions
Atmosphere	What is the Greenhouse Effect?
Permafrost ESA Links	Effects of Climate Change
	Climate and Global Change
	Global Warming
	Global Warming 101