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of/ or characterized by the absence of life or living organisms. |
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compound that forms hydrogen ions in solution. |
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one of a number different forms of a gene. |
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the process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another. |
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total of the variety of organisms in the biosphere. |
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groups of ecosystems that share similar climates and typical organisms. |
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process of manipulating organisms, cells, or molecules to produce specific products. |
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something of use, advantage, or value. |
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a mixture of various decaying organic substances, as deadleaves or manure, used for fertilizing soil. |
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organisms that need other organism for its energy and food supply. |
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organisms that break down and obtains energy from dead matter. |
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a mixture of various decaying organic substances, as deadleaves or manure, used for fertilizing soil. |
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divided or dividing into two parts. |
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organisms that live together in a non living enviroment. |
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Electronic Communication. |
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the science dealing with the formation, development,structure, and functional activities of embryos. |
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species at risk of extinction because of human activity, changesin climate, changes in predator-prey ratios. |
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