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| a genetic code in a molecule |
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| a signal to which an organism responds |
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| cells from two parents unite to form one signal cell of a new organism |
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| a single organism produces offspring indentical to itself |
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| when and organism keeps their inernel enviroment relativity stable, even when external conditione change dramatically |
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| the combinwtion of chemicwl reactions through which an organism builds up or breaks down materials |
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| "living planet" all forms of life on earth are connected into a biosphere |
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