BRAINCAKEEcosystems
An ecosystem is all the living organisms in a particular area, interacting with each other and with the non-living (physical and chemical) parts of their environment. It includes the biotic (living) and abiotic (non-living) components.
Some key terms:
• Habitat: the place where an organism lives.
• Population: all the individuals of one species living in the same area at the same time.
• Community: all the populations of different species living in the same area at the same time.
• Niche: the role of a species in its ecosystem, including what it eats, where it lives and how it interacts with other organisms and the environment.
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More in Ecosystems
- Biotic Factors
- Abiotic Factors
- Producers and Consumers
- Trophic Levels
- Biomass Transfer
- Ecological Efficiency
- Calculating Efficiency of Biomass Transfer
- Human Activities and Biomass Transfer
All 21 lessons in Ecosystems · All OCR A-level Biology topics