By: Hailey Huffman, Caroline Ervin


Interaction between two different organisms living in close physical association, typically to the advantage, of both.


The way two organisms of different species exists in a relationship in which each individual benefits from the activity of the other.

Example: A bee to a flower, bees get food, flower gets pollenated.


An association between two organisms in which one benefits and the other derives neither benefit nor harm.

Example: Pilot fish on sharks keep the shark clean and free from harmful parasites and clean up bits of excess food


A relationship between two things in which one of them (the parasite) benefits from or lives off of the other.

Example: Fleas on your dog, fleas suck the blood and dogs get diseases.