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Softening hard water by boiling
Temporary hardness can be removed from water by boiling. Shake a little temporary hard water with a few drops of soap solution and see if you can make suds. Next boil a same amount of the water that having temporary hardness. Try making suds with this sample after adding the similar amount of soap solution.
How has the earth changed since it was formed? Ans) The earth has changed particularly since it was formed. Earth was a ball of rock that was strike and changed by loads of imp
Diagnosis: 1. Diagnosis of the casualty involves considering the history, symptoms and signs. 2. History is the information as to how the accident or illness occurred.
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what is an easy way to learn everything about photosynthesis?
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