The process of ‘Nitrification’ in the nitrogen cycle involves:

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Accepted Answer

1. **Nitrification** is a soil process by bacteria.
2. It converts ammonia into nitrite and then into nitrate.
3. Written chemically: $NH_3 	o NO_2^- 	o NO_3^-$.
4. The final product, nitrate, is what plants can absorb.

FINAL_ANSWER: b

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