Read the given paragraph and answer the following questions.

The Great Barrier Reef, located off the northeastern coast of Australia, is the largest coral reef system in the world, stretching over 2,300 kilometres. Home to thousands of marine species, it's considered one of the seven natural wonders of the world. The reef is a vital marine ecosystem, but it faces threats from climate change, including warming waters and ocean acidification. UNESCO has listed the Great Barrier Reef as a World Heritage site due to its significant natural importance.