... , O3, CO2, and chlorofluorocarbons (CFCs) are measured in parts per million by volume (ppmv), parts per billion by volume (ppbv) or parts per trillion by volume (pptv). Atmospheric temperature and chemistry are believed to be controlled by the trace gases. There is increasing evidence that the percentages of environmentally significant trace gases are changing because of both natural and human factors ... . Action today will help prevent us suffering the major air pollution problems currently being experienced in many other parts of the world. Paul Holper May 1993 CSIRO Atmospheric Resear...

• Word Count: 2950
• Approx Pages: 12

... across on the other side. "Our study is a critical step in the exploration of Lake Vostok," Bell said. "These frozen lake water samples will record the passage of the ice sheet and the processes across the lake. The data shows that the location of the current research station on the lake may not be optimal for biological studies" (Geological Society, 2003 ... . . 8. Stone, Richard. "Vostok: Looking for Life Beneath an Antarctic Glacier." Smithsonian Magazine Jul. 2000. 3 Oct. 2003. . 9. United States. Office of Legislative and Public Affairs. National Science Foundation. Lake Vostok: Fac...

• Word Count: 2522
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

Abstract The goal of the soil project was to separate, purify, identify and quantify the four compounds that were present in an unknown soil sample. We were told that two of the compounds were organic and the other two were inorganic. We were given a list of all possible compounds, which we examined and used to create a procedure based on techniques we studied and practiced throughout the course that would allow us to perform both qualitative and quantitative analyses of our soil sample. We started our separation using vacuum filtration, first with ethyl acetate, and then water. This gave us a...

• Word Count: 3975
• Approx Pages: 16
• Has Bibliography
• Grade Level: High School