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Bonnie Branch 7th grade - 22-3 / Interactions among Living Things

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Term
Definition
niche   An organism’s particular role in an ecosystem, or how it makes a living  
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competition   The struggle between organisms for the limited resources in a habitat  
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predation   An interaction in which one organism hunts and kills another animal for food  
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predator   A carnivore that hunts and kills other animals for food and has adaptations that help it capture the animal it preys upon  
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prey   An animal that a predator feeds upon  
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symbiosis   A close relationship between two organisms in which at least one of the organisms benefits  
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mutualism   A type of symbiosis in which both partners benefit from living together  
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commensalism   A relationship between two species in which one species benefits and the other is neither helped nor harmed  
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parasitism   A relationship in which one organism lives on or inside another and harms it  
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parasite   An organism that lives on or in a host and causes harm to the host  
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host   An organism that provides a source of energy or suitable environment for a virus or for another organism to live  
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