STD 12 - 12. ecosystem — Biology STD 12 Science — Question

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Detritus is non-living particulars organic material. It typically includes the bodies or fragments of dead organisms as well as faecal material. Detritus is typically colonised by communities of microorganisms, which act to decompose the material. In terrestrial ecosystems, it is encountered as leaf litter and other organic matter intermixed with soil, which is referred to as humus. Detritus of aquatic ecosystems is organic material suspended in water, which is referred to as marine snow