Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Great Barrier Reef' has mentioned 'Pollution' in the following places:
Occurrence Sentence Text Source
Contents 1 Geology and geography 2 Ecology 3 Environmental threats 3.1 Climate change 3.2 Pollution 3.2.1 Loss of coastal wetland 3.2.2 Eutrophication 3.2.3 Sediment runoff 3.2.4 Pesticides 3.2.5 Pollution from mining 3.3 Crown of thorns 3.4 Overfishing 3.5 Shipping 3.6 Shark culling 4 Protection and preservation: Reef 2050 plan 5 Human use 5.1 Management 5.1.1 Abbot Point coal port dredge dumping controversy 5.2 Tourism 5.3 Fishing 5.4 Dugong hunting 6 See also 7 References 8 Further reading 9 External links
Climate change, pollution, crown-of-thorns starfish and fishing are the primary threats to the health of this reef system.
Pollution
Another key threat faced by the Great Barrier Reef is pollution and declining water quality.
Over 90% of this pollution comes from farm runoff.
[67] Sediments containing high levels of copper and other heavy metals sourced from the Ok Tedi Mine in Papua New Guinea are a potential pollution risk for the far northern Great Barrier Reef and Torres Strait regions.
Pollution from mining
This 35 years plan, titled "Reef 2050 Plan" is a document proposing possible measures for the long-term management of the pollution, climate change and other issues that threaten the life span and value of this global heritage.
[105] The decline in the quality of water over the past 150 years (due to development) has contributed to coral bleaching, algal blooms, and pesticide pollution.
These forms of pollution have made the reef less resilient to climate change.
To achieve the objectives described above, this plan focuses on non-point sources of pollution, which cannot be traced to a single source such as a waste outlet.
Other non-point sources of pollution that are attributed to urban areas are covered under different legislation.