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ARC-Easy / MCAS_1998_8_11 / To study the effect of heat on plant growth, Andy divided ten identical…

Problem

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question

To study the effect of heat on plant growth, Andy divided ten identical seedlings into groups. She placed one group on a windowsill in the sun and the other group in a dark closet on the cool (north) side of the house. Think about the characteristics of a properly designed scientific experiment. What is wrong with the above experiment?

choices

  • The temperature difference between the two groups was not great enough.
  • The amount of light was different for the two groups.
  • One group of seedlings got less water than the other.
  • Nothing is wrong with the experiment.

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Source and history

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