The diagram below shows a simplified schematic of the nitrogen cycle with five stages or pools and several arrows representing biochemical processes.
Name the biological process represented by each of the following arrows:
Name two different groups of organisms that act as decomposers to drive the process of Arrow F.
Describe the journey of nitrogen from nitrate ions in the soil (Box 3) to becoming part of a protein molecule inside an animal (Box 5).
Suggest two ecological or physical advantages of planting green manure (such as clover, a legume) and ploughing it back into the soil, rather than applying synthetic chemical fertilizers.
