What is an example of a food chain including cod?

* Phytoplankton: Tiny, single-celled algae that are the base of the food chain. They are consumed by zooplankton.

* Zooplankton: Microscopic animals that feed on phytoplankton.

* Cod: This predatory fish consumes zooplankton, as well as smaller fish.

* Larger Predators: Cod is then eaten by larger fish like halibut, seals, and sharks.

This is a simplified example. In reality, food webs are much more complex, with multiple species interacting and competing for resources. For example, cod also eats other small fish like herring, and they can even eat other cod!