Question

open - ended question using at least 2 sentences: trace the path a nitrogen atom could take through the nitrogen cycle. start in the atmosphere and end in the ocean. type your answer here

Explanation:

First, nitrogen in the atmosphere is fixed by nitrogen - fixing bacteria or lightning into ammonia or nitrate. These compounds are then taken up by plants. When plants are consumed by animals, the nitrogen is incorporated into animal tissues. When plants and animals die, decomposers break down the organic matter, releasing nitrogen back into the soil as ammonia or ammonium. This nitrogen can then be converted into nitrate by nitrifying bacteria. Eventually, through runoff and leaching, nitrate and other nitrogen - containing compounds are transported to the ocean.

Answer:

A nitrogen atom in the atmosphere can first be fixed by nitrogen - fixing bacteria into a form usable by plants. After plants take it up and are consumed by animals, decomposition of dead organisms releases nitrogen back into the soil. Through runoff, this nitrogen then makes its way to the ocean.