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globalchange

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carbon(427)
population(365)
precipitation(264)
conservation(239)
density(236)
emissions(227)
atmosphere(208)
lead(176)
heat(152)
carbon dioxide(147)
lakes(145)
forests(142)
velocity(139)
surface temperature(135)
earthquakes(127)
sediments(124)
biomass(122)
vegetation(122)
nitrogen(112)
atmospheric temperature(110)
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