Symbioses - Symbioses 1.mutualism 2.commensalism 0...

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Symbioses   1. mutualism       (+ +)   2. commensalism    (+ 0)   3. parasitism      (+ -)     Competition - interspecific and intraspecific   1. niche - an organism's functional role within an ecosystem   2. competitive exclusion principle - (Gause) only one organism can occupy a particular  niche
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