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Chapter 4

Niches and Community Interactions

QuestionAnswer
Tolerance Ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions
Habitat area where an organism lives, including the biotic and abiotic factors that affect it
Niche full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
Resource any necessity of life, such as water, nutrients, light, food, or space
Competitive Exclusion Principle principle that states that no two species can occupy the same niche in the same habitat at the same time
Predation interaction in which one organism captures and feeds on another organism
Herbivory interaction in which one animal feeds on the producers
Keystone Species single species that is not usually abundant in a community yet exerts strong control on the structure of a community
Symbiosis relationship in which two species live close together
Mutualism symbiotic relationship in which both species benefit from the relationship
Parasitism symbiotic relationship in which one organism lives on or inside another organism and harms it
Commensalism symbiotic relationship in which one organism benefits and the other is neither helped or harmed
Created by: jennalou244
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