why are positive and negative controls important in an experiment

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1. Solved 1-Are the controls in this experiment, positive or

   

2. Solved 4A. What are the controls in this experiment?

   

3. 6. Were there any controls in this experiment? Were

   

4. Solved Positive and negative controls are used in the

   

5. Solved Controls are important in any experiment. What

   

6. Solved In this experiment, you will observe positive and