Twelfth graders discuss the probability of imposing a democracy in a country in which there is no history of this type of government being successful. Using the internet, they work together to research Japan's experience with democracy...

Students follow the cycle of a raindrop from its source into the water supply for their houses and then back to the environment. They draw and, properly label and explain a diagram of a water treatment plant and a sewage treatment plant.

Students identify the causes of arsenic contamination. They list the world organizations involved in ensuring sanitary water supplies. Students describe various methods to mitigate arsenic contamination.