Paragraph 1: Introduction, The diagram shows a way in which sea water can be converted to drinking water using a simple device called a floating solar still., This device consists of a clear plastic dome, a rubber tube and a smaller container called a distilled water collector., Paragraph 2: Body 1, The larger plastic container is placed on the sea water, where it floats., The distilled water collector is attached to the container by a rubber tube, and is placed in the water next to it., Paragraph 3: Body 2, The process begins when the bottom of the larger container is partly filled by sea water, which enters through a small hole., Sunlight passes through the clear dome and heats up the sea water, which evaporates and condenses on the inside of the dome., The water flows down the dome into the rim of the container, through the rubber tube into the drinking water collector., It is ready to drink., Paragraph 4: Overview, The diagram shows how a bit of basic equipment can be used to produce clean drinking water in just a few simple steps.

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