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Examine the graph below.

World Fish Production. Digital image. World Resources Institute. World Resources Institute, n.d. Web. 28 Mar. 2016.

The data in this graph can be explained by all of the following EXCEPT


most of the world's fisheries have been overfished.


aquaculture often releases high levels of waste materials into the surrounding environment which can pollute the area for wild fish populations.


overfishing continues to be a problem due to technologies like vessel monitoring systems, which use satellites to track fishing vessel movements and improve fishing regulations.


coastal aquacultural development has resulted in the loss of mangrove forests, which play an important role as wild fish nurseries.


aquacultured fish have been genetically modified to increase the speed at which they grow.

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