Answer: Option D.
All of these.
Step-by-step explanation:
Animals eating plants is an integral part of carbon, phosphorus and nitrogen cycle .
Biogeochemical cycle refers to the pathway by which chemical substance is been cycled or moved between the atmosphere and the environment.
These include nitrogen, phosphorus, carbon, water cycles.
In nitrogen, carbon and phosphorus cycle, plants serve as the major carrier and producers of these nutrients from the atmosphere and animals gets these nutrients when the eats plants . These nutrients are later released to the atmosphere when plants died and the decomposers acts on them by breaking down the organic matter and releasing these nutrients to the soil.