Question

The three steps of the nitrogen cycle in order, starting with nitrogen gas in the atmosphere, are

nitrogen fixation, denitrification, and nitrification.

nitrification, nitrogen fixation, and denitrification.

nitrogen fixation, nitrification, and denitrification.

denitrification, nitrification, and nitrogen fixation.

Answer 1

nitrogen fixation, nitrification, and denitrification.

Step-by-step explanation:

Answer 2

nitrogen fixation, nitrification, and denitrification.

Step-by-step explanation:

• Nitrogen fixation involves converting atmospheric nitrogen into the soil by nitogen fixing bacteria to form ammonia.

• Nitrification involves converting ammonia to nitrites then to nitrates by bacteria [ nitro cocci, nitrobacter and nitrospina ]

• Denitrification is the final process that involves nitrates back to atmospheric nitrogen.

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