Question:

The Great Barrier Reef refers to

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“\textbf{Reef}” in geography = submerged \textbf{rock/coral} ridge; \textbf{Great Barrier Reef} = iconic \textbf{coral} ecosystem.
Updated On: Aug 12, 2025
  • Coral formation
  • Tidal waves
  • Hill range
  • Man-made walls
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The Correct Option is A

Solution and Explanation

What it is: A chain of coral reefs and cays extending over 2,300 km off northeastern Australia—the planet’s largest coral reef system—built by living coral polyps depositing calcium carbonate.
Why others are wrong: (b) “tidal waves” are water motion, not geological/biological structures; (c) “hill range” is terrestrial; (d) “man-made walls” is the opposite—reefs are natural biogenic formations.
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