TOEFL Reading Academic Passage Practice #002 - Coral Reef Ecosystems

What you will practice

• Reading comprehension
• Evidence and inference
• Time management

Topic: Biology · Read an Academic Passage

Passage preview

Coral reefs are among the most biodiverse ecosystems on Earth, often called the “rainforests of the sea.” These underwater structures are built by colonies of tiny animals called coral polyps, which secrete calcium carbonate to form hard skeletons. Over…