<em>Water purification</em> - The process by which undesired chemical compounds, organic and inorganic materials, and biological contaminants are removed from water. The purification procedure reduces the concentration of contaminants such as suspended particles, parasites, bacteria, algae, viruses, and fungi.
Tell your friend that you can't keep a secret about something so serious like that.
B. figure out where in your day you could eat more food.
