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globalchange

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carbon(3)
density(2)
nitrogen(2)
public health(2)
air quality(1)
bioturbation(1)
boundaries(1)
conservation(1)
elements(1)
emissions(1)
geochemistry(1)
minerals(1)
nitrogen oxides(1)
population(1)
scattering(1)
terrestrial ecosystems(1)
vegetation(1)
volcanic eruptions(1)
wetlands(1)