The nitrogen cycle is most directly dependent upon the?

Question

1.process of transpiration in autotrophs
2.ability of consumers to move from place to place
3.metabolic activities of soil bacteria
4.evaporation of water from the Earth's surface

Answer 1

3. metabolic activities of soil bacteria

Bacteria fix atmospheric nitrogen, changing nitrogen gas into compounds that plants can absorb through their roots.

Both 1 and 4 are parts of the water cycle, not the nitrogen cycle.

Answer 2

Number 3. Metabolic activities of soil bacteria.