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8th grade

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Please Help Me. I'm doing a Science Fair Project, and I need help with finding simmilar experiments to mine. My experiment is:
Which saliva is cleaner: Cat, Dog, or Human???

  • 8th grade -

    You must be much more specific on what "cleaner" means before you proceed. Discuss this with your parents or teacher, because "cleaner" is not a useful term.

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