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Water Body Salinities II
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.
Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.
Freshwater Ecosystems
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In this activity, learners create a freshwater ecosystem in a large plastic bottle. Learners cut and prepare bottles, then fill with water, aquatic plants, snails and fish.