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What shapes an Ecosystem? 4.2,[object Object]
Biotic Factor,[object Object],Biological influence on organisms within an ecosystem.,[object Object]
Abiotic Factor,[object Object],Physical, or nonliving, factor that shapes an ecosystem.,[object Object]
Habitat ,[object Object],The area where an organism lives, including the biotic and abiotic factors that affect it.,[object Object]
Niche,[object Object],Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.,[object Object]
Resource ,[object Object],Any necessity of life, such as water, nutrients, light, food, or shape. ,[object Object]
Competitive exclusion principle ,[object Object],Ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same time. ,[object Object]
Predation,[object Object],Interaction in which one organism captures and feeds on another organism.,[object Object]
Symbiosis,[object Object],Relationship in which two species live closely together.,[object Object]
Mutualism,[object Object],Symbiotic relationship in which both species benefit from the relationship.,[object Object]
Commensalism,[object Object],Symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed.,[object Object]
Parasitism,[object Object],Symbiotic relationship in which one organism lives in or on another organism and consequently harms it. ,[object Object]
Ecological Succession,[object Object],Gradual change in living communities that follows a disturbance.,[object Object]
Primary Succession ,[object Object],Successionthat occurs on surfaces where no soil exists.,[object Object]
Pioneer Species ,[object Object],First species to populate an area during primary succession.,[object Object]
Secondary Succession,[object Object],Succession following a disturbance that destroys a community without destroying the soil.,[object Object]
Key Concept,[object Object],How do biotic and abiotic factors influence an ecosystem?,[object Object],Together, biotic and abiotic factors determine the survival and growth of an organism and the productivity of the ecosystem in which the organism lives.,[object Object]
Key Concept,[object Object],What interactions occur within communities?,[object Object],Community interactions, such as competition, predation, and various forms of symbiosis, can powerfully affect an ecosystem.,[object Object]
Key Concept,[object Object],What is ecological succession?,[object Object],Gradual change in living communities that follows a disturbance.,[object Object]

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