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globalchange

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carbon(3)
density(3)
magnetic field(2)
organic carbon(2)
petroleum(2)
precipitation(2)
solar wind(2)
agriculture(1)
air quality(1)
aquifers(1)
atmosphere(1)
atmospheric temperature(1)
carbon dioxide(1)
carbonate(1)
conductivity(1)
drought(1)
droughts(1)
electric field(1)
electrical conductivity(1)
emissions(1)
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