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Ecology Assignment #2 • Mutualism – Symbiotic relationship where both organisms benefit. Ex. Termites and Bacteria • Commensalism - Symbiotic relationship where one organism benefits, the other is unaffected • Parasitism - Symbiotic relationship where one organism benefits, the other is harmed. • Symbiosis - “Living Together” when organisms interact, live together. • Prey - What is eaten, dies by predator • Predator – What eats prey, hetereotroph • Sampling – Gaining a small part of the whole to learn what it is like, (Ice cream samples at Coldstone.) • Quadrant – Area section of a grid, used when sampling • pioneer species – First species in an area after it is formed or cleared of life. • climax – Top of the succession, everything is in the ecosystem • community – Group of related populations together. • biotic – Living factor in the environment • abiotic – Nonliving factor in the environment • limiting factors – Factors that limit the number of organisms living in an area. Ex. Food, Water, Oxygen • carrying capacity – The highest number of organisms which can live in an area • J Curves – A graph which curves up Quickly and has no top, Exponential growth • S Curves – A curve that goes up quickly, but reaches its carrying capacity • Competition – When two or more organisms compete for resources.