What did Karl Wilhelm Scheele and James Marsh contribute to forensic science?

a) They invented systems for fingerprint identification.

b) They invented microscopes.

c) They established procedures for coroners and medical examiners.

d) They invented tests for arsenic in the body.

d) They invented tests for arsenic in the body.

Explanation:

Wilhelm Scheele was a Swedish Pomeranian and German chemist who made great advancements in several areas of chemistry. Scheele discovered oxygen, as well as molybdenum, tungsten, barium, hydrogen, and chlorine. He is also remembered for his work with arsenic acids, as well as the development of a test for arsenic. On the other hand, James Marsh was a British chemist who invented the "Marsh test," which is a more efficient test for detecting arsenic.