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Water for life
Water for life

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Figure 1
Figure 1 (a) A tsunami wave; (b) a bag of agricultural fertiliser; (c) white crystals of the fertiliser sodium nitrate dissolving in a beaker of water. The image in (b) is a still taken from the video sequence Elements and Compounds which you will watch in Activity 1. It shows a bag of Chilean nitrate of soda which is sodium nitrate

 1 The power of water