He would have to stage an experiment. Use some pots with regular soil as well as some pots with miracle grow. Plant the same kind of plants and let them grow under the same light and wetness conditions.
after a pre set time like a week or two for example. He then would check on the plants to see if the specimens in miracle grow soil did in fact grow faster.
The answer is YES. I did that experiment this year in school :)
well this is what I found so goodluck hope it helped
Answer:
Quackery: Deliberate misrepresentation of the ability of a substance, a device, or a person to prevent or treat disease.
Explanation:
D. geotropism. Phototropism is the response to light, hydrotropism is the response to moisture, and thigmotropism is the response to a touch stimulus