The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Normal warming is mostly caused by natural gases.
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on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S.
The economic system may be production,allocation,distribution,firms,and how the government responds to the economic problem.
<span>A major plate is one that has an area greater than 20 million kilometer squared and a minor plate is one not greater than 20 million kilometer squared and larger than 1 million kilometer squared. Minor plates are not usually shown on maps of major plates.</span>
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floods, landslides, tsunamis, storms, heat waves, cold spells, droughts, and waterborne disease outbreaks are all becoming more frequent
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