Multiple choice

What is the largest living structure on Earth?

  1. The Brazilian Rainforest

  2. The Great Barrier Reef, Australia

  3. The Sumatran Jungle

  4. The Great Plains
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Great Barrier Reef is the world's largest coral reef system and is considered the largest living structure on Earth, visible even from space. The other options are ecosystems or geographical regions, not single biological structures.

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