The earliest forms of life on earth were photosynthetic.
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The production of cells during mitosis into specialized function is recombination or differentiation
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Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above
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An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil
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