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conservation(1509)
population(334)
carbon(255)
forests(231)
sustainability(170)
landscape(152)
fisheries(122)
emissions(118)
lead(105)
vegetation(101)
density(87)
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coral reefs(82)
biomass(79)
wetlands(67)
grasslands(66)
deforestation(63)
precipitation(61)
surface water(58)
carbon dioxide(53)
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