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GCSE Combined Science · key term
A living influence on organisms in a community, such as food availability, predators, pathogens or competitors.
Used by AQA and Edexcel
Specification 4.7.1.3 · Paper 2
Revise: Biotic FactorsA biotic factor is a living influence on organisms in a community. Important examples are food availability, the arrival of new predators, new pathogens and competition between species. These differ from abiotic factors, such as temperature, which are non-living conditions.
Paper 1, Paper 2
A living component of an environment, or an influence involving living organisms.
Revise: Ecosystem Organisation and InterdependenceBiotic factors involve the living components of the environment, including competition and predation.
Link the change in the biotic factor to survival or reproduction, then to population size. Do not just say that it ‘affects the ecosystem’.
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