Sagot :
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The natural sources of hardness in water are dissolved polyvalent metallic ions from sedimentary rocks.
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#CarryOnLearning
[tex]\sf \blue{—————————————————————————}[/tex]
The natural sources of hardness in water are dissolved polyvalent metallic ions from sedimentary rocks.
[tex]\sf \blue{—————————————————————————}[/tex]
#CarryOnLearning