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-- and, umm, a lot of species, for example, in southeast asia. >> reporter: dragon flies help control mosquito populations and manage diseases like malaria and dengue fever. but as wetlands fannish, the dragon fly's future sun certain. according to is 201 study, over a third of wetlands have been lost since 1970, a rate three times that of forests. >> and if you see a sign against the wetlands saying, reclaimed. what they're doing is draining it, filling it in to build housing, and infrastructure. that's destruction.
Source: archive.org