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Which of the following gases was not believed to be present on earth at the time of its formation 4.6 billion years ago? a. oxygen c. water vapor b. nitrogen d. methane
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One of the purposes of transcription is to produce a sequence of bases that
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What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.
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2points what do bacteria have in common with the cells of other living organisms?
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Which of the following gases was not believed to be present on earth at the time of its formation 4....
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