Link for a multimedia presentation https://drive.google.com/file/d/0B4GardjjzJkXWnNzQTBIdElyOGs/edit?usp=sharing https://drive.google.com/file/d/0B4GardjjzJkXXzVDT3F2YjZnRVo0blpiZDVkYUtxT21ucmhV/edit?usp=sharing Ecology (from Greek : οἶκος , "house"; -λογία, "study of" [A] ) is the scientific study of interactions among organisms and their environment, such as the interactions organisms have with each other and with their abiotic environment . Topics of interest to ecologists include the diversity , distribution, amount ( biomass ), number ( population ) of organisms, as well as competition between them within and among ecosystems . Ecosystems are composed of dynamically interacting parts including organisms , the communities they make up, and the non-living components of their environment. Ecosystem processes, such as primary production , pedogenesis , nutrient cycling , and various...
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