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Biology Quizlet #14
9 terms Quater 3
Term | Definition |
---|---|
habitat | the natural home or environment of an animal, plant, or other organism. |
ecological niche | A specific role of a species within an ecosystem, including its use of resources, and relationships with other species. |
competition | the struggle between organisms to survive in a habitat with limited resources |
Principle of Competitive Exclusion | two species can't coexist if they occupy exactly the same niche, competing for identical resources |
niche partitioning | The process by which natural selection drives competing species into different patterns of resource use or different niches. Coexistence is obtained through the differentiation of their realized ecological niches. |
overproduction | organisms produce more offspring than can survive |
descent with modification | each living species has descended, with changes, from other species over time |
realized niche | the range of abiotic and biotic conditions under which a species actually lives; the result of the presence of limiting factors |
fundamental niche | The full potential range of the physical, chemical, and biological factors a species can use if there is no competition from other species. |