Control is the group that is out of the test, for example on a drug test, the control group will not use the drug. That is, when testing a specific substance, the control is the name given to the part of the simulation where you ran the indicator test on distilled water.
In other words, the control is characterized by a situation where a certain variable is not being tested, it is a simulation where so variable is in the most normal and pure situation possible.
It was named reaction. Distilled waters for family aquariums in light of the fact that it does not have the chemicals reaction in tap water. It is essential to supplement refined water when utilizing it for fish keeping; it is excessively unadulterated, making it impossible to maintain the compound responses expected to help an aquarium biological system.
