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surface water(5)
wetlands(3)
nitrates(2)
rivers(2)
sediment(2)
water pollution(2)
wetland ecosystems(2)
algae(1)
carbon dioxide(1)
carbon sequestration(1)
decomposition(1)
equipment(1)
fertilizers(1)
filter paper(1)
fine roots(1)
invasive species(1)
lakes(1)
leaves(1)
particulates(1)
phytoplankton(1)
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