Intersection in which one organism eats another

Predation An interaction in which one organism kills another for food. Prey An organism that is killed and eaten by another organism. Mutualism A relationship between two species in which both species ben- efit. Parasitism A relationship in which one organism lives on or in a host and harms it.

The hawk receives 0.1% energy from the caterpillar although the caterpillar gets eaten by another bird smaller than the hawk first