Biotic and Abiotic Factorss

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Biology-H 2011-12 :

Biology-H 2011-12 G. Barnhardt Biotic vs. Abiotic

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Ecosystem Living (Biotic) factors all plants & animals living in an area Physical (Abiotic) factors soil, rock, temperature, moisture, sunlight habitat = address (where you live) niche = job (the role you play)

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all the living things or their materials that directly or indirectly affect an organism in its environment. all organisms their presence their parts their interaction Their wastes . Factors such as parasitism, disease, and predation (one animal eating another) would also be classified as biotic factors. Biotic Factors

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non-living physical and chemical factors which affect the ability of organisms to survive and reproduce. light intensity temperature range type of soil or rock pH level (acidity or alkalinity) water availability dissolved gases level of pollutant Abiotic factors determine the types and numbers of organisms that exist in that environment. Factors which determine the types and numbers of organisms of a species in an ecosystem are called limiting factors . L imiting factors restrict the growth of populations in nature. Ab iotic Factors

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