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Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations? (SC.912.L.18.9) Only species Y is aerobic Only species Y is anaerobic Both species X and Y are aerobic Both species X and Y are anaerobic

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Answered by GPT-5 mini AI
Only species Y is anaerobic.

Reason: Production of CO2 and H2O indicates aerobic respiration (species X). Production of ethyl alcohol and CO2 indicates alcoholic fermentation, an anaerobic process (species Y).