TOEFL Reading Academic Passage Practice #023 - Natural Dyes and Colorfastness

Read an Academic Passage designed to build passage comprehension, evidence use, and efficient reading decisions.

5 QuestionsAbout 8 minutesMedium

What you will practice

Reading comprehension
Evidence and inference
Time management

Topic: Biology · Read an Academic Passage

Passage preview

Natural dyes are color-producing compounds obtained from plants, insects, fungi, or minerals. Extracting a colored liquid is often straightforward, but attaching that color permanently to a fiber is more difficult. Many dye molecules have little attraction to…

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