IB ESS HL 2.2.25 Hl Npp and Food Chains Questions
Relate net primary productivity to biomass available through food chains.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Relate net primary productivity to biomass available through food chains.
The diagram shows gross and net productivity at different trophic levels in the Silver Springs, Florida, ecosystem.
Define net primary productivity.
the gain by producers in energy or biomass per unit area per unit time remaining after allowing for respiratory losses (R).