Gap Fill - Coral Reefs - Level 5


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   bleaching      condition      deep      deeper      extensive      location      prone      record      sunlight      surface  

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The of the reef means it is in pristine . Most reefs are in warmer waters, which makes them to bleaching from global warming. Tahiti's reef is deep enough and has sufficient to protect it from . UNESCO said deeper reefs are better protected from global warming. It believes the Tahiti reef is "one of the most healthy coral reefs on ". It believes more mapping of the ocean should be undertaken. It said: "We know more about the of the Moon or the surface of Mars than the part of the ocean."

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