Mutualism
Mutualism is a form of symbiotic relationship. It is a relationship between different species where both species benefit from the relationship.
A good example of a mutualism is the relationship between aphids and ants. The aphids secrete a sugary solution called honeydew. Ants drink the honeydew and, in return, they protect the aphids from predators.
A photograph of an ant collecting honeydew from aphids.
Photograph by böhringer friedrich licensed under Creative Commons.
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