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ARC-Challenge / ACTAAP_2009_7_8 / Which of the following statements is a scientific hypothesis?

Problem

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question

Which of the following statements is a scientific hypothesis?

choices

  • Flossing has proven to be an effective method of improving oral health.
  • Many infectious diseases, such as gum disease, are caused by microorganisms.
  • In general, any method that reduces bacteria in the mouth will improve oral health.
  • An individual who flosses daily will be less likely to get gum disease than one who flosses weekly.

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Source and history

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