| A | B |
|---|
| competition | ecological relationship in which two organisms attempt to obtain the same resource |
| predation | process by which one organism hunts and kills another organism for food |
| symbiosis | ecological relationship between members of at least two different species that live in direct contact with one another |
| mutualism | ecological relationship between two species in which each species gets a benefit from the interaction |
| commensalism | ecological relationship in which one species receives a benefit but the other species is not affected one way or another |
| parasitism | ecological relationship in which one organism (parasite) benefits by harming another organism (host) |
