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Relationships in the Ecosystem
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Predators and Prey Predator – consumer that actively hunts other living organisms. Prey – consumed by predators. Predator and prey populations are linked. If prey population increases, predator population increases.
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Symbiosis Any relationship in which two species live closely together
3 types: Parasitism Commensalism Mutualism
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Parasitism Relationship in which one organism feeds on the tissues or body fluids of another. One organism benefits and one organism is harmed. Host - parasite feeds on this organism. Ex. – ticks, lice, fleas, tapeworm.
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PARASITISM
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Commensalism One organism benefits and the other is neither harmed nor helped. Ex. – Whales & Barnacles – whales are not affect. The barnacles get a free ride & food.
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COMMENSALISM
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Mutualism Both organisms benefit.
Some are necessary for the survival of both organisms. Ex. – yucca plant & yucca moth – cannot survive without one another.
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MUTUALISM
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