2. First of all, water resources are water sources that are useful and can be useful to people. Climate change threatens water resources because climate is so close to the hydrological cycle. Unsealed, abandoned and improperly constructed wells can very easily threaten water resources, and also lead to water pollution. Population growth also threatens water supply because more people are using water, and rely on it. Some micro organisms that cause health effects are usually found in drinking water.

3. To protect our water supply and to prevent water pollution, we should re-use automobile oil as much as possible. Turn off your faucets when you are not using them to conserve water. Ex) when brushing your teeth, turn off taps. Avoid throwing litter into streams, lakes, rivers, or seas. If you see any litter, pick it up and dispose of it properly.

4. People that swim in pools will find that the water they swim in is disinfected with either chlorine, ozone, UV or chlorine dioxide. However, there are people that also swim outside in surface water every year. These people are most susceptible to bacteria infections and infections caused by other micro organisms. Micro organisms often enter surface water through animal excrements and industrial discharge. Drainage systems threaten water resources because lakes can frequently “disconnect” from their drainage basins, causing waste to go elsewhere from where it’s supposed to go. Micro organisms in water under a microscope

5. This graph shows the best estimate of people in developing countries who have had access to drinking water from 1970-2000. As you can see, 2000 was the year that water was most used and relied on.

6. 3. http://www.buzzle.com/articles/ways-to- prevent-water-pollution.html 2. http://www.google.ca/imgres?imgurl=http://www.topnews.in/files/Water- supply.JPG&imgrefurl=http://www.topnews.in/rs138-cr-water-supply-plant-gurgaon- 2232724&usg=__oUDR87WpwPMGaN2Yjz- 52VSZtKI=&h=682&w=682&sz=281&hl=en&start=0&zoom=1&tbnid=TFqO02nFUJr61M:&tbnh=1 37&tbnw=168&prev=/images%3Fq%3Dwater%2Bsupply%26um%3D1%26hl%3Den%26safe%3D active%26biw%3D1003%26bih%3D419%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=108&ei=p v29TJqpDY6VswaswYiqDQ&oei=pv29TJqpDY6VswaswYiqDQ&esq=1&page=1&ndsp=8&ved=1t:4 29,r:0,s:0&tx=124&ty=77 1.http://www.google.ca/imgres?imgurl=http://lh5.ggpht.com/_7JtmuNxu-- M/Sc3QNtmFx3I/AAAAAAAADB0/BsPtughNYVI/wm- Heart%2520Water%2520Drop.jpg&imgrefurl=http://wopico.blogspot.com/2009/04/heart- water- drop.html&usg=__hePeNWyXZ5QzaX4WhZXysFNgUbY=&h=375&w=500&sz=19&hl=en&start =0&zoom=1&tbnid=o7iwGkLmsWHhJM:&tbnh=135&tbnw=204&prev=/images%3Fq%3Dwate r%2Bdrop%26um%3D1%26hl%3Den%26safe%3Dactive%26biw%3D1003%26bih%3D419%26t bs%3Disch:1&um=1&itbs=1&iact=rc&dur=487&ei=1v29TITBPIWDswasvMXEDQ&oei=1v29TIT BPIWDswasvMXEDQ&esq=1&page=1&ndsp=8&ved=1t:429,r:6,s:0&tx=78&ty=53

7. http://images.google.com/imgres?imgurl=http://images- 1.redbubble.com/img/art/size:xlarge/view:main/1245495-1-the-water-of- leith.jpg&imgrefurl=http://edinburghlook.wordpress.com/tag/litter/&usg=__SX6kiO39kKPwNpC J40wUEVZ6B- A=&h=534&w=800&sz=238&hl=en&start=0&zoom=1&tbnid=JNrl0gFbLpvvyM:&tbnh=136&tbn w=184&prev=/images%3Fq%3Dlitter%2Bin%2Bwater%26hl%3Den%26safe%3Dactive%26biw%3 D1003%26bih%3D419%26gbv%3D2%26tbs%3Disch:1&itbs=1&iact=hc&vpx=122&vpy=82&dur= 1138&hovh=183&hovw=275&tx=136&ty=107&ei=SR6_TIa1KOGQnwfS3OXnAQ&oei=SR6_TIa1K OGQnwfS3OXnAQ&esq=1&page=1&ndsp=8&ved=1t:429,r:0,s:0 http://en.wikipedia.org/wiki/File:Access_to_drinking_water_in_thir d_world.svg http://www.lenntech.com/water- microbiology-faq.htm