The scatter around the trend in Exhibit 2 is instructive.

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In the nuclear age this has meant the ability to scatter defences around its western neighbour.

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The problem is that on the Carteret Islands, a horseshoe shaped scatter of small islands around a central lagoon, nowhere is more than 1.2 meters above sea level.

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This is based around the principle that different types of chemicals will scatter light in different ways.

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