| A | B |
|---|
| Bacteria | Majority of decomposers which aren't fungi |
| Fungi | Majority of decomposers which aren't bacteria |
| Decomposers | Convert protein and urea into ammonia |
| Liver | Where urea is made |
| Amino acids | Contain nitrogen and used to make protein |
| Protein | Broken down to produce carbohydrates and urea |
| Nucleic acid | A common nitrogen containing compound found in chromosomes |
| Nitrifying | Bacteria which turn ammonia into nitrate |
| Plant roots | Take up nitrate from the soil |
| Nitrogen | Made from nitrates by denitrifying bacteria |
| Nitrogen fixing | Bacteria which live in the root nodules of legumes |
| Legumes | Beans, peas, clover and alfalfa |
| Lightning | Stormy method of fixing nitrogen |
| Organic | 'Fixed' nitrogen is nitrogen which is part of this sort of compound (contains C and H) |
| Waterlogged | Soil where there is little oxygen and denitrifying bacteria are dominant |
| Fertiliser | Added by farmers to increase nitrate concentrations in the soil |
| Root nodules | Where nitrogen-fixing bacteria live in a legume |
| Sugars | What nitrate is combined with to make organic molecules |
| Haber process | How factories make ammonium nitrate fertilisers from nitrogen and hydrogen |
| Inorganic | A compund (like ammonium nitrate fertiliser) which doesn't contain C and H |
