variable, a condition in an experiment that can be changed, test, to find out the nature or quality of something, limitation, the boundary of a model, innovation, a new product, process, or idea, impact, a strong and powerful effect, hypothesis, a prediction that can be tested, experimental investigation, a fair test in which a control is identified and variables are measure to test a hypothesis, discovery, an observation made for the first time, criteria, conditions that must be met, control, the variable in an experiment that remains unchanged, advantage, a characteristic of a model that is useful or helpful.

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