*Three types of symbioses
n1. parasitism-- one species benefits, the other is harmed (ticks, fleas, tapeworms etc.) ecology pics\tapeworm life cycle.jpg,  ecology pics\Trichinella_LifeCycle.gif, ..\..\AP BIO\articles\Diseases and conditions\Guinea worm infection.doc,  ecology pics\GuineaWorm treatment.jpg
n a. parasite
n b. host
n 2. mutualism -- both organism benefit (acacia tree and ants) ecology pics\ecology pictures.jpg
n 3. commensalism-- one species benefits and the other is neither helped nor harmed (could care less)  ex. Orchid epiphytes (ecology pics\epiphyte.jpg) geese and falcon  (Red breasted geese nest near falcons where they are protected from predators)
n