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Ecology

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Term
Definition
Abiotic Factor   Any nonliving part of the environment, such as water, sunlight, temperature, and air.  
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Biosphere   Part of Earth that supports life - the top part of Earth's crust, all the waters covering Earth's surface, and the surrounding atmosphere; includes all biomes, ecosystems, communities, and populations.  
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Biotic Factor   Any living or once-living organism in the environment.  
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Community   All of the populations of different species in a given area that interact in some way and depend on one another for food, shelter, and other needs.  
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Ecology   Study of all the interactions among organisms and their environments.  
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Ecosystem   All of the communities in a given area and the abiotic factors that affect them.  
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Population   All of the individuals of one species that live in the same space at the same time.  
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Habitat   Place where an organism lives.  
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Limiting Factor   Any biotic or abiotic factor that limits the number of individuals in a population.  
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Niche   Role of an organism in the ecosystem, including what it eats, how it interacts with other organisms, and how it gets food.  
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Population Density   Number of individuals in a population that occupies an area of limited size.  
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Symbiosis   Any close interaction among 2 or more different species, including mutualism, commensalism, and parasitism.  
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Food Chain   Model that describes how energy passes from one organism to another.  
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Food Web   Model that describes how energy from food moves through a community; a series of over lapping food chains.  
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Water Cycle   Continuous recycling of water molecules on Earth that are recycled through this process using evaporation, condensation, and precipitation.  
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Created by: Jordan_Pentland
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