Answer:
The part that does NOT change during an experiment.
Explanation:
Because that's what a constant is. I think this is what you meant by this question.
The correct answer is D, Hope that helps! :)
The sympathetic nervous system.
This is a part of the nervous that operates involuntarily (you can’t control it) and functions to “turn you on” as part of the fight or flight response.
The parasympathetic is the other big involuntary part that mostly does the opposite functions.
Answer:
Cells such as chloroplasts are self replicating
Explanation:
a chloroplast is not a cell its an organelle.
A constant factor could be the dose of the drugs and the species of the rats used.
<h3>What is a constant factor?</h3>
In an experiment, a constant factor is one that is not allowed to change al through the experiment. This one must be held as the same and not allowed to vary. A constant factor could be the dose of the drugs and the species of the rats used.
The factor that would be different for the experimental group and the control group the administration of the new drug.
Learn more about experiment:brainly.com/question/11256472
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