WD+Webquest+Questions

Waterborne Diseases WD Timeline
 * __Webquest Questions__**
 * 1) Have there been more or less outbreaks since 1945?
 * 2) What years were there the fewest outbreaks?
 * 3) What years were there the most outbreaks?
 * 4) What percent of the world does not have access to safe and clean drinking water?
 * 5) How many people are exposed to arsenic in Bangladesh on a daily basis?
 * 6) Hoy many cases drinking water outbreaks have occurred in the US between 1991 and 2000?
 * 7) What year did Koch learn that chlorine kills bacteria?
 * 8) When did chlorination used to prevent a typhoid fever epidemic?
 * 9) Name the general areas affected by Waterborne Diseases?