Compare the nitrogen, carbon, and oxygen cycles.

Answer:

The nitrogen, carbon, and oxygen cycles all move essential elements between living things and the nonliving environment. Photosynthesis and respiration connect the carbon and oxygen cycles: photosynthesis takes in carbon dioxide and releases oxygen, while respiration uses oxygen and releases carbon dioxide. The nitrogen cycle includes processes such as nitrogen fixation and denitrification, while carbon also moves through oceans, rocks, and fossil fuels. Oxygen cycles through the atmosphere, water, and organisms.