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globalchange

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carbon(26)
precipitation(16)
density(15)
population(14)
vegetation(12)
forests(11)
carbon dioxide(9)
drought(9)
magnetic field(8)
conservation(7)
lakes(7)
organic carbon(7)
droughts(6)
nitrogen(6)
surface water(6)
agriculture(5)
grasslands(5)
monsoons(5)
oxygen(5)
soil moisture(5)
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