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SYMBIOSIS – two or more species live together in a close, long-term association •Parasitism – good for one species, bad for host •Mutualism – both species benefit Commensalism – one species benefits and the other is unaffected Symbiosis Activity • I’m going to out you in groups of 3 • You’re going to create 3 different types of relationships from the organisms on the worksheet • You need an example for each type of symbiotic relationship – Parasitism – Mutualism – Commensalism Interspecific Interactions Competition • Species directly competing for resource -ex. In Africa, lions and hyenas compete for prey Predation • Predators have ways to find and eat their prey examples – lions, snakes, spiders, centipedes • Prey have ways to hide from or escape their predators Camouflage: Poor-will (left), lizard (right) Aposematic (warning) coloration in a poisonous blue frog Deceptive coloration: moth with "eyeballs" Mimicry