The most simple answer I can think of would be that improper handling can cause damage to the test subject, which would effect the results, making them unreliable.
Every soil originally formed from parent material : a deposit at the earths surface. The material could have been bed rock that weathered in place or smaller material carried by flooding rivers, moving glaciers or blowing winds.
Scientific inquiry is to think , ponder, and have an interest in investigating something that exist or you think may exist or should exist. Anyone can use it ( kind of like the scientific method) but people who commonly use it seriously is police, scientists, and other career fields who find it necessary. Scientific inquiry involves a person, research tools, space, writing pad, and one, etc.
