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In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.

An estuary is a body of water that is created when freshwater from rivers and streams flows into the saltwater of an ocean.

This creative lesson plan provides a visual way for learners to gain knowledge about the finite amount of fresh water on Earth and encourages the discussion of the various ways to conserve this resour

This creative lesson plan provides a visual way for learners to gain knowledge about the finite amount of fresh water on Earth and encourages the discussion of the various ways to conserve this resour