IB ESS 4.4.4 Biochemical oxygen demand (BOD)
IB ESS 4.4.4 Biochemical oxygen demand (BOD)
Practise defining BOD and using it with biotic evidence to assess organic matter, decomposition and oxygen stress in aquatic systems.
How this is tested
- define BOD as dissolved oxygen needed for aerobic decomposition of organic matter
- outline indirect pollution measures such as BOD, indicator species or biotic indices