How do we keep our drinking water lt1 of all water on earth good safe and clean There are many ways we can purify water on earth For example you can boil water to help kill harmful bacteria in our drinking water if the sewers overflow into our fresh drinking water supply ID: 531510
Download Presentation The PPT/PDF document "How do we clean up this mess?" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
