Biology A-Level
energy flow
What energy flow means in Biology A-Level, as defined for AQA.
Definitions of energy flow
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Reference: AQA
Light is captured by producers, passes along food chains and is lost as heat at every transfer, so the system needs a constant input.
Energy enters continuously as light, is fixed by producers, is transferred along food chains and is lost as heat at every transfer.
Topics that use energy flow
- Populations in ecosystems (A-level only) (AQA A-Level)
Related terms
- abiotic components
- abiotic factors
- belt transect
- community
- competitive exclusion
- conflicting human needs
- Conservation
- correlation not causation
Using energy flow in the exam
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