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globalchange

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population(229)
carbon(176)
conservation(140)
precipitation(109)
lead(100)
density(94)
emissions(93)
forests(83)
lakes(75)
atmosphere(73)
vegetation(70)
biomass(68)
nitrogen(68)
surface water(67)
heat(66)
landscape(64)
carbon dioxide(61)
earthquakes(61)
sediments(60)
velocity(59)
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