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Read the statements about scientific theories below, and determine if they are true or false. A theory is a hypothesis that is supported by the results of many similar experiments. A theory can be proven. A theory is assumed to be true based on existing, supported knowledge. A theory can be modified or replaced.

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Answer: true, false, true, true

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A theory is an explanation of an observed phenomenon based on careful observations.

A theory is usually devised to account for an observation. It is an explanation of an observation based on the weight of evidence available at the moment of devising the theory.

A theory can be revised as many times as possible as new evidences emerge concerning the observation.

Summarily, the following are true/false respectively ;

  • A theory is a hypothesis that is supported by the results of many similar experiments. True
  • A theory can be proven.  True
  • A theory is assumed to be true based on existing, supported knowledge. False
  • A theory can be modified or replaced. True

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