Could a teacher use ink chromatography to determine whether or not a student has changed his or her answers after a test has been graded and returned? Explain your answer.

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Nima M · Answer 1 · 2020-08-04T01:48:03+0000

Answer:

yes they can

Step-by-step explanation:

because if the student happen to use s different ink the teacher can determine it by chromatography. the rf value of different ink will be differant