Bacteria in the digestive systems of animals that help to break down the animals' food, and in return receive a sheltered habitat and food. This is an example of mutualism.

Question

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The definition of mutualism is the relationship between two species where both benefit. In this case, the bacteria benefit by receiving a sheltered habitat and food, while the animals benefit by having their food broken down.

Bacteria in the Digestive Systems of Animals That Help to Break