👉 The term "nontarnished" is a phrase that refers to something that has not been contaminated or washed, and it implies that the object remains unaltered. In the context of environmental science, this term could refer to anything from soil to water, which is cleaned up by natural processes without any human intervention. For example, in a laboratory setting where samples are being analyzed, nontarnished means that the sample has not been contaminated with any substances or contaminants during its preparation and analysis
