What you'll learn
The chemistry behind food production.
Key ideas
- Fertilisers (nitrogen, phosphorus, potassium) and eutrophication.
- The Haber process makes ammonia for fertilisers.
- Intensive vs organic farming.
Exam tips
- Explain eutrophication step by step.
- Balance yield against environmental cost.
Common mistakes
- Skipping the oxygen step in eutrophication.
- Confusing the reactants of the Haber process.