Nature and EnvironmentEarth's natural clean-up crewJennifer Collins09/04/2017September 4, 2017Vultures, flies and bacteria - none of these organisms are particularly well-loved by humans. But they are essential to keeping our ecosystem healthy and clean by helping to get rid of dead animal and plant matter. https://p.dw.com/p/2jEFfImage: grizzlybaerin/FotoliaAdvertisement
