zhuotingwu147 zhuotingwu147

23-10-2019
Biology

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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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aiham1042 aiham1042

10-01-2020

Answer:

yes they can

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

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