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9th Bio Chpt 6

9th Grade Honors Biology Chapter 6

TermDefinition
habitat area where an organism lives including the biotic and abiotic factors that affect it
tolerance ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions
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
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
commensalism symbiotic relationship in which one organism benefits and the other is neither helped nor harmed
mutualism symbiotic relationship in which both species benefit from the relationship
parasitism a symbiotic relationship in which one organism lives on or inside another organism and harms it
ecological succession series of gradual changes that occur in a community following a disturbance
primary succession succession that occurs in an area in which no trace of a previous community is present
pioneer species first species to populate an area during succession
secondary succession type of succession that occurs in an area that was only partially destroyed by disturbances
biodiversity the total of the variety of organisms in the biosphere; also called biological diversity
ecosystem diversity variety of habitats, communities, and ecological processes in the biosphere
species diversity number of different species that makes up a particular area
genetic diversity sum total of all the different forms of genetic information carried by a particular species, or by all organisms on Earth
resilience a natural or human system's ability to recover after a disturbance
ecosystem services a natural or human system's ability to recover after a disturbance
Created by: EllyNicole11
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