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the space surrounding the nucleus of an atom contains what? |
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what makes up a molecule of water? |
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two atoms of hydrogen and one atom of oxygen |
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what type of electron is available form bonds? |
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what type of ions forms when an atom loses electrons? |
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the most abundant compound in most living things is what? |
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when salt is dissolved in water, water is the? |
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a substance with pH of 6 is called |
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what is a monosaccharide? |
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what are RNA molecules made of? |
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when hydrogen and oxygen combine to form water, water would be |
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if a reaction in one direction releases energy, the reaction in the opposite direction is a? |
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enzymes affect the reaction in living cells by changing the |
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what is the organization of an ecosystem? |
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species are grouped in populations, which make up communities |
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the simplest grouping of more than one kind of organism in the biosphere is a |
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which ecological inquiry method is an ecologist using when he or she eneters an area periodically to count the population numbers of certain species? |
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the algae at the beginning of the food chain are |
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an organism that uses energy to produce its own food supply from inorganic compiunds is called a |
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