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20 December, 19:16

Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger brand, and Ever Ready.

1) What is the control?

2) What are the constants?

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Answers (1)
  1. 20 December, 19:18
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    The control is the battery

    And the constant is the clock
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