| A | B |
|---|
| both organisms benefit | goby fish and blind shrimp |
| mutualism | egret and the cow |
| examples of both organisms benefit | hummingbird and a flower |
| one organism benefits and the other is harmed | head lice and humans |
| parasitism | dog and the flea |
| examples of one organism benefits and the other is harmed | heartworm and dog |
| one organism benefits and the other doesn't care | barnacles on a whale |
| commensalism | clownfish and the sea anemone |
| examples of one organism benefits and the other doesn't care | smaller birds build their nest by the hawks |
