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How do we know the oxygen released in photosynthesis comes from water?
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Describe the primary and secondary immune response in terms of speed and number of antibodies produced?
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Are the earth's ocean floor and continents the same age geologically? why or why not?
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When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen
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How do we know the oxygen released in photosynthesis comes from water?...
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