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ARC-Easy / AKDE&ED_2008_4_33 / Many years ago, purple dye was made from some sea animals. Then, in 1856,…

Problem

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question

Many years ago, purple dye was made from some sea animals. Then, in 1856, William Perkins tried to make a new medicine. Instead, he found a way to make purple dye from coal. What is a positive effect of his discovery?

choices

  • Some diseases can be treated.
  • Purple clothing can be made.
  • Sea animals are not needed to make purple dye.
  • Perkins is famous for discovering a new medicine.

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