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Missouri GED On-Line, Science

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Term
Meaning
organisms   living things  
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ecosystems   a community of populations or organisms, together with the habitats and natural resources that affect the community  
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environment   all of the living and nonliving things that affect an organism's life in some way  
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cell   the basic building blocks of all life  
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organic   a term that means carbon-carrying  
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species   term refering to a group of organisms taht have the same number of cromosomes and look alike  
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invertibrate   group animals without a backbone or skull  
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vertibrate   group of animals with backbones  
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migrate   to move from one place to another  
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mutation   a change in genetic information within a cell  
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genes   a strand of DNA that carries the information for a specific trait  
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nucleus   part of the cell that controls it's activities  
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stimulus   something in the environment that causes a living thing to change it's behavior  
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DNA   molecule that holds all of the genetic information of an organism  
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mitosis   process of cell division  
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atmosphere   the blanket of air that surrounds the earth  
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erosion   the natural movement of rock fragments due to gravity  
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solar system   term used to describe a sun and the objects that orbit it (planets, moons, and asteroids)  
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galaxy   a large group of stars  
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