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Science Vocabulary

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Birth Rate   The number of births in a population in a certain amount of time  
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Death Rate   The number of deaths in a population in a certain amount of time  
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Immigration   Moving into a population  
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Emigration   Leaving a population  
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Niche   The role of an organism in its habitat or how it makes its living  
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Symbiosis   A close relationship between two species that benefits at least one of the species  
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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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Limiting Factor   An environment factor that causes a population to decrease  
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Carrying Capacity   The largest population that an area can support  
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Natural Selection   A process by which characteristics that make an individual better suited to its environment become more common in a species  
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Adaptations   A behavior or physical characteristic that allows an organism to live successfully in its environment  
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Competition   The struggle between organisms to survive as they attempt to use the same limited resource  
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Mutualism   A relationship between two species in which both species benefits  
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Parasitism   a relationship in which one organism lives on or in a host and harms it  
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