does every experiment have a control group

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1. What is the purpose of a control group in an experiment?

   

2. Solved The purpose of a control group in an experiment

   

3. Control Group Examples

   

4. Solved 5. Explain the purpose of a having a control group in

   

5. Control Group in Science: Understanding the Basics and Benefits

   

6. Solved In a scientific experiment, the control group:is