Title: Evaluate whether human or natural systems pose the greatest threat to the Great Barrier Reef. Post by: Harro on Jul 5, 2017 Evaluate whether human or natural systems pose the greatest threat to the Great Barrier Reef.
Title: Re: Evaluate whether human or natural systems pose the greatest threat to the Great Barrier Reef. Post by: GirlGeek on Jul 5, 2017 Answers should mention rising sea temperatures, tourism, oil exploration.
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