The diagram shows a representation of the nitrogen cycle within an terrestrial ecosystem. Different pathways and stages are numbered 1 to 8.
The table lists some of the stages involved in the nitrogen cycle.
Complete the table by giving the correct number, or numbers, corresponding to each stage.
The first one (feeding) has been done for you.
| Stage | Number |
|---|---|
| feeding | 2 |
| nitrification | |
| nitrogen fixation | |
| denitrification | |
| decomposition |
Explain how nitrate ions (NO3−NO_3^-NO3−) are absorbed from the soil into the roots of producers at stage 1.
