Escherichia coli bacteria in the human colon provide vitamin K in return for a steady food supply and warm place to live. This is an example of a ____ relationship.

A) mutualistic
B) predatory
C) commensal
D) parasitic
E) habitat

Mutualistic Relationship

A type of symbiotic interaction between two different species where both participants benefit from the relationship.

Escherichia Coli

A rod-shaped bacterium commonly found in the intestines of warm-blooded organisms, involved in digestion but can cause food poisoning when in harmful strains.

Vitamin K

A fat-soluble vitamin necessary for blood clotting and found in leafy green vegetables, fruits, and dairy products.