The Great barrier reef is the worlds largest reef and its threatend by flood water.
Plumes of dirty, fresh water from the Burdekin, Fitzroy and Burnett rivers are flowing into the ocean off the coast of Queensland, carrying with it a toxic mix of nutrients, sediment and pesticides from agricultural run-off as well as unknown amounts of trace metals from flooded mines that could be lethal to the living organisms that make up the reef.
want to know more about the case?
go to (( http://www.care2.com/causes/australian-floodwaters-threaten-barrier-reef.html )) to read all about it :3

