Respuesta :

Answer: The Sea level rose

Explanation: Great Barrier Reef in Australia is the largest coral reef structure in the world,it contains over 600 Islands with a high level of biodiversity containing more than 1500 Fish species,over 200 species of Birds etc.

Due to the effects of Global warming that has caused the sea Temperature to rise parts of the Great Barrier Reef in Australia has been known to be Dead,the Sea level rose causing the Great Barrier Reef in Australia to grow upward.

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