IB ESS 2.3.24 (HL) Nitrogen planetary boundary
IB ESS 2.3.24 (HL) Nitrogen planetary boundary
Practise explaining why human nitrogen use exceeds the planetary boundary and how fertiliser-driven nitrate increases affect the biosphere.
How this is tested
- explain how inorganic fertilisers drive nitrate increases in the biosphere
- apply the planetary-boundary idea to judge unsustainable nitrogen use