Q. The cycle of life, death and decay involving organic nitrogeneous matter is called (Solved)
1. The sulphur cycle
2. The nitrogen cycle
3. The carbon cycle
4. The hydrological cycle
5. None of the above
- b. The nitrogen cycle
1. The sulphur cycle
2. The nitrogen cycle
3. The carbon cycle
4. The hydrological cycle
5. None of the above