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Respiration: follow the carbon dioxide sim

Air moves from left to right: A removes incoming carbon dioxide with potassium hydroxide, B checks that air with limewater, C holds the seeds, and D t

Respiration · follow the carbon dioxide · covers the GCSE, IGCSE, O-Level topic

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What the sim shows

Air moves from left to right: A removes incoming carbon dioxide with potassium hydroxide, B checks that air with limewater, C holds the seeds, and D tests the outgoing air. The inlet tubes dip into the solutions; the outlets stay above them. Compare living and boiled seeds. Clouding is an illustrative cumulative threshold, not a carbon dioxide concentration assay.

  • A: KOH scrubber. B: inlet limewater. C: seeds on a porous support above water. D: outlet limewater. The suction pump is on the right.

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