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Which of the following is a necessary reactant for cellular respiration to occur?
Carbon dioxide
Nitrogen
Oxygen
Water
Answers: 3
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In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -
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Which of the following is a necessary reactant for cellular respiration to occur?
Carbon dioxide
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