Q: Which cycle tracks the flow of nitrogen through an ecosystem?


Read this paragraph and choose the correct option from the provided answers:

Mariana Ruiz Villarreal (LadyofHats) for CK-12 Foundation. The nitrogen cycle tracks the flow of nitrogen through an ecosystem . CC BY-NC 3.0.

 Choices:

- nitrogen reaction

- water cycle

- life cycle

- nitrogen cycle


A:
nitrogen cycle