What human activities affect the Great Barrier Reef?

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Tags

1. #bleaching
2. #horrific
3. #pollution
4. #highly
5. #caused
6. #deadly
7. #three
8. #major
9. #decades
10. #vulnerable
11. #starfish
12. #produced
13. #development
14. #cover
15. #global
16. #outbreaks
17. #coastal
18. #looms
19. #threat
20. #coral
21. #warming