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Which of the following processes returns carbon to the atmosphere? a. transpiration b. photosynthesis c. cellular respiration d. evaporation
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Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
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Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this
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Which of the following processes returns carbon to the atmosphere? a. transpiration b. photosynthes...
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