Final answer:
The Great Barrier Reef is a biodiverse natural wonder located off the coast of Queensland, Australia. It is made up of thousands of individual reefs and islands, not created by volcanic activity.
Step-by-step explanation:
The Great Barrier Reef is a natural wonder located off the coast of Queensland, Australia. It is not created by volcanic activity, but rather composed of thousands of individual reefs and islands that stretch over 2,300 kilometers. The Great Barrier Reef is one of the most biodiverse places in the world, home to thousands of species of plants and animals, including coral, fish, turtles, and sharks.
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