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O2 – Good for Lake Quality
Not just oxygen (O2), but dissolved oxygen (DO) is necessary for good water quality. The concentrations of such oxygen in unpolluted fresh waters can vary greatly and is influenced by temperature, atmospheric pressure, and salinity. Dissolved oxygen is essential for gilled fish and insects, and influences many biological and chemical processes in lakes and streams.

Sufficient dissolved oxygen in the water makes life possible for fish, insects, snails, crayfish, frogs, and various other aquatic organisms. The presence of oxygen allows other important chemical reactions to occur in water as well. For example, a well oxygenated lakes dissolved phosphorus and iron combine. This chemical process removes phosphorus from the water.

Read more about the science of dissolved oxygen.

 
 


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Shrinking of Lake Chad Turning Farmland into Desert - From droughts to floods, life in Africa's Sahel belt can be a constant struggle, For the more than 20 million people living in the region though, the shrinking of Lake Chad, the most reliable source of freshwater, is threatening their very survival.


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