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9 July, 12:19

8. When testing the benefits of a new fertilizer on the

growth of tomato plants, the control group should include

which of the following? *

O

A) Tomato plants grown in soil with no fertilizer

O

B) Tomato plants grown in soil with the original type of fertilizer

O

C) Tomato plants grown in a different type of soil with the new fertilizer

O

D) Tomato plants of different varieties grown in soil with new fertilizer

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Answers (1)
  1. 9 July, 12:33
    0
    A) Tomato plants grown in soil with no fertilizer

    Explanation:

    The control group is the group that you do not change anything. This is used as a basis or a baseline to determine whether changes you make in the experimental groups actually made a difference. An experiment is incomplete when you do not have this because it does not show any evidence that the change you made is what ellicits an effect.
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