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The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution.

A 2-column table labeled Paramecium Contractile Vacuole Contractions has 5 rows. The first column is labeled salt concentration outside paramecium with entries very high, high, medium, low, very low. The second column is labeled contractions per minute with entries 2, 8, 15, 22, 30.

Which statement correctly describes the bars on a bar graph representing the data?
The graph has five bars of equal height.
The bars range from tallest for very high concentration to shortest for very low concentration.
The bar for very low concentration is twice the height of the bar for medium concentration.
The bar for very high concentration is five times the height of the bar for very low concentration.

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KitKatGodz2003

Answer:

The correct answer is C

Explanation:

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The bar for very low concentration is twice the height of the bar for medium concentration gives a correct description of the bar graph.

The data given :

Salt concentration ___ concentration per minute

Very high _____________ 2

High _________________8

Medium ______________15

Low _________________22

Very low _____________30

From bar graph produced which is attached below ;

  • The graph has five bars of unequal length. (option A is incorrect)
  • The bars range from shortest for very high to tallest for very low concentration. (option B is incorrect)
  • The bar for very low is twice the bar for medium salt concentration : (TRUE)
  • HEIGHT OF MEDIUM BAR = 15
  • HEIGHT OF VERY LOW BAR = 30
  • 30 / 15 = 2 ; Hence Option C is True
  • HEIGHT OF VERY HIGH BAR = 2
  • 30 / 2 = 10 (option D is incorrect)

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