Biology A-Level
humus
What humus means in Biology A-Level, as defined for AQA.
Definition of humus
Check what you remember
Read the wording for your board, then hide it and explain humus in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Material formed when dead remains are decomposed by saprobionts, which holds water and releases mineral ions.
Topics that use humus
- 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 humus in the exam
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