What does a secondary level consumer eat?

Explanation:

Secondary consumers are the animals that eat the primary consumers.

They are heterotrophs, specifically carnivores and omnivores. Carnivores only eat other animals. Omnivores eat a combination of plants and animals. They are typically small to medium animals like lizards, robins, and frogs. Secondary consumers are usually not the last organism in a food chain. They are often eaten by large predators, the tertiary consumers.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?