Did you know that even pure water contains organic material from the wastes and remains of aquatic animals and plants? However, fresh water will either absorb these wastes, transform them into useful substances, or get rid of them.
How does this happen?
The secret lies in the fact that unpolluted water contains dissolved oxygen,. This dissolved oxygen contains micro-organisms that feed on the organic matter, leaving behind a harmless residue that either settles to the bottom, or is dissolved, or swept away.
So, we can say that pure water cleans itself, thanks to the presence of dissolved oxygen.
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