Textbook Problem

Match the terms with the most suitable descriptions.

_____	mutualism	a. one free-living species reeds on another and usually kills it
_____	parasitism	b. two species interact and both benefit by the interaction
_____	commensalism	c. two species interact and one benefits while the other is neither helped nor harmed
_____	predation	d. one species feeds on another that it lives on or in
_____	interspecific competition	e. species both need a resource