You are experimenting to find out if fertilizer makes a plant grow taller. what would be an appropriate control group for this experiment?

The appropriate control group in this experiment are plants that do not receive the fertilizer.

In an experiment, the experimenter seeks to establish cause and effect relationship. To do so, the effect of one variable on another must be tested.

A control group must also be in place to establish the validity of the experiment. A control group is the group that does not receive the treatment.

In this case, the treatment is addition of a fertilizer. The experimental group are plants that received the fertilizer while the control group are plants that did not receive the fertilizer.

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If plants are given nitrogen fertilizer, then they will grow taller. ... Factors in an experiment that a scientist PURPOSELY Changes (manipulated) Control Group ... to test various amounts of fertilizer to find out what amount makes plants grow

Explanation:

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c02is a greenhouse gas.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons