Which sequence correctly shows the main steps of the nitrogen cycle in the soil?
Answer and explanation
Correct answer: D. Ammonium is converted to nitrite and then to nitrate by nitrifying bacteria
- Step 1: Decomposers release ammonium from dead matter. Step 2. Nitrifying bacteria then oxidise it to nitrite and then to nitrate, which plants absorb. Answer: ammonium to nitrite to nitrate. Why not the others: the other orders reverse the stages.
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