TOEFL Reading Academic Passage Practice #033 - Bioluminescence in the Deep Ocean

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

5 QuestionsAbout 8 minutesHard

What you will practice

Reading comprehension
Evidence and inference
Time management

Topic: Biology · Read an Academic Passage

Passage preview

Far below the ocean surface, sunlight is weak or absent, yet many animals produce light through chemical reactions. This phenomenon, called bioluminescence, usually occurs when a light-producing molecule reacts with oxygen. The reaction may take place within…

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