What is spontaneous consumer?

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examples of the primary consumers are the rats and examples of secondary consumers are snakes eating the rats

To be very general, producers make food from the sun, primary consumers eat them, secondary consumers eat them, and, depending on the ecosystem, a tertiary consumer or top consumer eats them.

tertiary consumers

Secondary or greater. They don't eat the grass. They eat things that eat plants (secondary) or the things that eat them (tertiary) or beyond.