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globalchange

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carbon(16)
population(13)
emissions(11)
glaciers(7)
lead(7)
particulate matter(7)
lakes(6)
conservation(5)
mortality(5)
nitrogen(5)
sediments(5)
carbon monoxide(4)
density(4)
isotopes(4)
organic carbon(4)
sulfur(4)
surface water(4)
drought(3)
forests(3)
islands(3)
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