by: dalto bradshaw


mutualism- the doctrine that mutual dependence is necessary to social well-being. ex- flower and bees help each other

commensalism- an association between two organisms in which one benefits and the other derives neither benefit nor harm.ex- birds riding elephants backs

parasitism- is a relationship between two things in which one of them (the parasite) benefits from or lives off of the other, like fleas on your dog.