Question

what do primary consumers eat? producers tertiary consumers

Explanation:

In an ecosystem, primary consumers are herbivores (or organisms that feed on producers). Producers are organisms like plants (or algae in aquatic ecosystems) that make their own food via photosynthesis. Primary consumers, such as rabbits (terrestrial) or small fish that eat algae (aquatic), rely on producers as their food source. Tertiary consumers are top - level predators that eat secondary consumers, not what primary consumers eat. So primary consumers eat producers.

Answer:

A. Producers