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globalchange

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carbon(9)
emissions(9)
population(6)
biomass(5)
carbon dioxide(5)
lakes(5)
atmosphere(4)
environmental impacts(4)
precipitation(4)
agriculture(3)
conservation(3)
forests(3)
lead(3)
methane(3)
nitrate(3)
permafrost(3)
salinity(3)
surface temperature(3)
surface water(3)
aerosols(2)
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