The Great barrier coral reef is located alongside the north-eastern shores of Australia, int the waters of the Pacific Ocean. It is by far the most recognizable coral reef in the world, and it is also one of the biggest tourist attractions of Australia.
Answer:
4 More carbon dioxide is being emitted
Explanation:
I did some research and every one of them deals with rising temperatures.
So 3 or4 may be the answer, but I should say go with 4
4's cause is fossil fuels that people are burning for energy. That's why more carbon dioxide is being emitted.
Agricultural chemicals
drying up / hope this helped :)
