Mutualism is a form of mutually beneficial relationship that occurs in nature. Symbiosis mutualism is a relationship between a single living being and other living things that are mutually beneficial for both parties.
For example, the symbiosis between cows and storks
Storks can get food in the form of head lice and some grasshoppers that are disturbed by the grass fed by cows, while cows are helped to eliminate fleas that make the body itchy.