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| all the parts of the planet that are inhabited by living things; sum of all Earth's ecosystems |
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| community of living things in an area, plus the nonliving features of the environment that support them |
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| Life's basic units of structure and function. All organisms are made of one or more of these |
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| deoxyribonucleic acid (DNA) |
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| molecule cntains the instructions for a cell to make all the other molecules it needs to function |
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| A segment of DNA that codes for a specific trait. units of inherited information. |
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| distinct form of life. two members of this are the same if they can breed and produce fertile offspring. |
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| broadest category that many biologists use in classifying life forms |
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| consisting of a single cell |
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| "Before Nucleus" cell lacking a nucleus or membrane bound organelles |
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| "true nucleus" cell with a nucleus (surrounded by its own membrane) and other internal organelles |
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| organisms consisting of many cells, not just one |
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| process by which plants make food |
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| organisms that produce the food upon which the entire ecosystem depends |
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| organism that eat (consume) food made by producers |
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| inherited characteristic that improves an organism's ability to survive and reproduce in a particular environment |
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| a localized group of organisms belonging to the same species |
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| this is the natural environment "selecting" certain inherited traits |
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| this has properties that are based on the arrangement and interactions of its parts |
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