(a) State three ways by which nitrogen is added to soil in the Nitrogen cycle. (b) List five ways by which nitrogen is lost from the soil. (c) State the imp...

(a) State three ways by which nitrogen is added to soil in the Nitrogen cycle.

(b) List five ways by which nitrogen is lost from the soil.

(c) State the importance of the Nitrogen cycle.

(d) Explain three processes leading to the formation of nitrate from organic matter in the Nitrogen cycle.