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bio sec 4-2

what shapes an ecosystem

QuestionAnswer
the biological influences on organisms within an ecosystem biotic factors
physical, or nonliving factors that shape ecosystems abiotic factors
together, _______ and __________ factors determine the survival and growth of an organism and the productivity of the ecosystem in which the organism lives biotic abiotic
the area where an organism lives habitat
full range of physical and biological conditions in which an organism lives and the way the organism uses those conditions niche
community interactions, such as _____, ______ and various forms of ______, can powerfully affect and ecosystem competition, predation, symbiosis
any necessity of life resource
no two species can occupy the same niche in the same habitat at the same time competitive exclusion principle
an interaction in which one organism captures and feeds on another organism predation
any relationship where two species live closely symbiosis
both species benefit from the symbiotic relationship mutualism
symbiosis where one organism benefits and the other is neither helped nor harmed commensalism
symbiosis where one organism lives on or inside another and harms it parasitism
t/f ecosystems are constantly changing in response to natural and human disturbances true
true/false as an ecosystem changes, older inhabitants gradually die out and new organisms move in, causing further changes in the community true
the series of predictable changes that occurs in a community over time is called _______ _________ ecological succession
on land, succession that occurs on surfaces where on soil exists is called_________ ________ primary succession
the first species to populate an area pioneer species
when a disturbance of se kind changes an existing community w/o removing the soil SECONDARY SUCCESSION
Created by: ebony5407
 

 



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