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6 Cards in this Set
- Front
- Back
Ice Age
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a period of glacial advance
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Aerosol
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solid particles or liquid drops in a gas
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Sunspot
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dark, cooler regions on the surface of the sun
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Greenhouse Effect
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the trapping of heat near a planets surface
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Fossil Fuel
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energy, rich substances formed from the remains of organisms
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Global Warming
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a gradual increase in the average temperature of the atmosphere
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