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        | Structure (opposable thumbs) |  | 
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        | Parents/cells producing children/children cells. |  | 
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        | Breathing, chemical necessary for everything. |  | 
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        | Substances passing through membrane. |  | 
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        | Breathing, heart beating. |  | 
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        | Rearranging chemicals to fiot the body's needs. |  | 
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        | Sweat, urine, carbon dioxide. |  | 
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        | Most abundant chemical, transports, maintains body temperature. |  | 
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        | Provide chemicals, are the building blocks for growth, provide energy. |  | 
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        | Releases energy from food. |  | 
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        | Form of energy, increases reaction rates. |  | 
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        | Force applied, ex: breathing, circulation of blood. |  | 
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        | Ability to maintain a stable internal environment. |  | 
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        | Reduces/eliminates stimulus that causes our bodies to become unstable.   (high outdoor temperature -> sweat -> body temperature goes down) |  | 
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        | Increases intensity of stimulus.   (blood clotting, labor & delivery) |  | 
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