TREE PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the variable the experimenter has control over
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the data the experimenter is collecting
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factors that do not change over the course of the experiment
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None of the above
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Detailed explanation-1: -A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout the course of the investigation.
Detailed explanation-2: -In a controlled experiment, all extraneous variables are held constant so that they can’t influence the results. Controlled experiments require: A control group that receives a standard treatment, a fake treatment, or no treatment. Random assignment of participants to ensure the groups are equivalent.
Detailed explanation-3: -The factors in an experiment that can be changed are called variables. Some example of variables would be: changing the temperature, the amount of light present, time, concentration of solutions used.