Safe Drinking Water
Drinking dirty water is the cause of many diseases, some fatal. Four different methods of sterilising water to make it fit to drink are discussed: boiling, distillation, filtration and using the heat of the sun.
|Category:||Health and Hygiene|
|File Size:||6.96 MB|
|Last Updated Date:||08-Jun-2020|
Adapted from various sources from the world wide web.