* Producers: Plants (grass, leaves, etc.)
* Primary Consumers: Deer (herbivores)
* Secondary Consumers: Predators that eat deer (wolves, cougars, bears, etc.)
* Tertiary Consumers: Predators that eat the predators of deer (larger predators like eagles, or other apex predators)
* Decomposers: Bacteria and fungi break down dead organisms and waste, returning nutrients to the ecosystem.
Of course, this is a very basic example. There are many other animals that could be included in a deer's food chain depending on the specific ecosystem. For example, deer can also be prey for smaller predators like coyotes and bobcats.
Important Note: Deer are also known to be omnivores on occasion, meaning they can consume a variety of foods including small animals, insects, and fungi. However, their primary food source is vegetation, making them primarily herbivores.