Label the parts of the nitrogen cycle. You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop. Aboce ground there are animals, plants, and a factory. There is a rain cloud in the sky. Below ground there are dedcomposers, N O 3 minus, N H 3, N O 2 minus, and N H 4 plus. There are arrows between the various items. An arrow points from the plants to the animals. An arrow from the animals and plants points to the decomposers which has an arrow that points to N H 4 plus. An arrow points at N H 4 plus and the rain cloud from an area of the sky. An arrow from N H 4 plus points to N O 2 minus. An arrow from the factory points to N H 3, which has a arrow that also points to N O 2 minus. An arrow from N O 2 minus points to N O 3 minus. An arrowed labeled assimilation from N O 3 minus points towards the plants. A second arrow from N O 3 minus points towards the rain cloud.