Populations in Ecosystems (AQA A-Level Biology): Flashcards
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Ecology definition
Ecology definition
Study of inter-relationships between organisms & environment
Abiotic factors
Abiotic factors
Non-living factors e.g. temperature, rainfall
Biotic factors
Biotic factors
Living factors e.g. competition, predation
Ecosystem definition
Ecosystem definition
Dynamic system of community & all non-living environmental factors
Population definition
Population definition
Group of one species in same habitat, same time, can interbreed
Carrying capacity
Carrying capacity
Size of population an ecosystem can support
Community definition
Community definition
All populations of different species living & interacting together
Habitat definition
Habitat definition
Place where organism lives; characterized by physical conditions & other organisms present
Ecological niche
Ecological niche
Where organism lives & what it does; all biotic & abiotic conditions it's adapted to
Competitive exclusion principle
Competitive exclusion principle
No two species occupy exactly the same niche
