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globalchange

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carbon(16)
population(13)
emissions(8)
sediments(8)
biomass(7)
vegetation(7)
carbon dioxide(5)
conservation(5)
irrigation(5)
landscape(5)
minerals(5)
mortality(5)
nitrogen(5)
soils(5)
boundaries(4)
degradation(4)
fisheries(4)
forests(4)
invasive species(4)
methane(4)
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