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Question

Revolt · Accepted Answer

Joseph Priestly observed that a candle alone in a jar did not stay lit for long.; Priestly observed that adding a plant to the jar caused the candle to stay lit longer.; Priestly inferred that plants give off oxygen during photosynthesis, providing the oxygen needed for the candle to burn.; Priestly inferred that the burning candle gave off carbon dioxide, which was used by the plant.

Lab: Diffusion Across a Semi-permeable Membrane

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