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| | Learn more about Ecology in the online encyclopedia. (Site not responding. Last check: 2007-11-06) |
 | | It was in 1935 that Arthur Tansley, the british ecologist, coined the term ecosystem, the interactive system established between the biocenose (the group of living creatures), and their biotope, the environment in which they live. |
 | | For modern ecologists, ecology can be studied at several levels: population level (individuals of the same species), biocenose level (or community of species), ecosystem level, and biosphere level. |
 | | The Earth, from an ecological point of view, consists of several compartments, the hydrosphere (or sphere of water), the lithosphere (or sphere of soils and rocks) and the atmosphere (or sphere of the air). |
| www.onlineencyclopedia.org /e/ec/ecology.html (4356 words) |
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