| http://www.w3.org/ns/prov#value | - Half of the Great Barrier Reef;s coral has disappeared in the past 27 years and les than a quater could be left within a decade unless action is taken, reseachers warned that while the World Heritage listed reef was a dynamic system, with coral covering rising and falling over time , if the reef coral dies of less than 25 percent will not exist in 2022.Last Updated : 8th Novemeber 2012 Logan Sponsell
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