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Relationships in a Community
Predation and Symbiosis
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Predation: -One animal (the predator) kills and eats another animal (the prey)
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Symbiosis- -When two different organisms have a close relationship.
There are 3 kinds.
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1. Mutualism- -When both organsims benefit from the relationship.
-examples:
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Commensalism- -When one organism benefits and the other is unaffected.
-examples:
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Parisitism: -When one organsim (the parasite) benefits and the other (the host) is harmed, but not killed. DIFFERENT FROM PREDATION!
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niche- the role an organism plays in it’s community (Examples:
producer, herbivore, carnivore, omnivore, predator, prey, parasite, host, etc. ) as well as what physical space it occupies. Only one species per niche!=competitive exclusion principal Biodiversity- Variety of organisms in a community High biodiversity= rainforest, coral reef Low biodiversity= ice caps, desert
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