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population(2374)
conservation(327)
density(276)
lead(194)
population density(187)
carbon(179)
mortality(163)
emissions(158)
forests(126)
landscape(110)
population size(110)
lakes(108)
fisheries(104)
urban areas(103)
agriculture(100)
public health(88)
precipitation(86)
heat(83)
sustainability(82)
vegetation(74)
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