| A | B |
|---|
| fertilisers | Substances added to soil to replace lost nutrients and help plant growth |
| nitrates | Compounds containing nitrogen that plants can absorb and use |
| photosynthesis | The process by which plants make food from carbon dioxide, water and energy from the Sun |
| decomposers | Organisms that break down dead organisms (e.g. bacteria and fungi). |
| eutrophication | Bacteria multiply by feeding on dead material and use up all the oxygen in the water |
| lack of Nitrogen | Stunted plants & yellow leaves |
| lack of Potassium | Yellow leaves & dead patches |
| lack of Phosphates | Poor root systems & small leaves |
