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6 Cards in this Set
- Front
- Back
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ice age
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Period in earth's history where glaciers covered the earth
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aerosol
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fine solid particles or liquid droplets in the atmosphere
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sunspot
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a relatively dark, cool region on the surface of the sun
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greenhouse effect
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the trapping of heat near a planet's atmosphere
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fossil fuels
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coal, oil, or fuels formed naturally formed over millions of years from the remains of organisms
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global warming
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the rising average temperature of earths atmosphere caused by an increase in green house gases from human activities
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