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Pentachlorophenol-contaminated soil was amended with a strain of Pseudomonas capable of biodegradation of the pollutant. After bioremediation was complete, soil was tested for indicators of ecological condition. Several direct-toxicity measures (plant seed germination and root elongation, earthworm survival) showed the bioremediated soil to be indistinguishable from clean reference soil.
Difficulty: High school
There are a wide variety of pollutants that can affect water and the plants and animals that live in the water. This pollution can be divided into three groups: chemical pollution, thermal pollution, and ecological pollution. Since not all pollution is human produced students need to understand that there are sometimes "natural" reasons for some pollution.
Difficulty: Elementary school
The purpose of this experiment is to determine which method of water purification, filtration, distillation, or solar pasteurization, is most efficient by treating tap and river water for pH, chlorine, total hardness, nitrate, phosphate, ammonia nitrogen, copper, and iron. These processes will also be tested to determine their effectiveness of removing E. coli B that has been previously introduced
Difficulty: Middle school
This lab activity in counting plankton, reinforces the use of the microscope. Differences encountered in count may lead to an exercise in graphing the observed results and stimulate discussion concerning plankton count variation from selected collection sites.
Difficulty: High school
Demonstrate phenomenologically the effects of acid rain on our environment and perform long-term "real-time" experiments.
Difficulty: Elementary school
Students will see the techniques that are used to filter our water. Students will gain an idea as to various pollutants which can contaminate our water and an appreciation of the need to keep our water supplies clean.
Difficulty: Middle school
The mortality rate of fresh water guppies (Poecilia reticulata) increases as the acid level in the water increases.
Difficulty: Elementary school
This experiment was performed to ascertain the concentration of lead content in the tap water of new houses (less than 10 years old) as compared to houses which are more than 50 years old. These older houses should still be using lead pipe plumbing.
Difficulty: Middle school
This science fair project is performed to compare the level of marine pollution (specifically, copper leaching) at a boatyard with pollution in other locations. The testing was done at an independent lab using water samples obtained from a boatyard, a marina, a beach and tap water.
Difficulty: Middle school
This science fair project was performed to find out how oil spills will affect aquatic plants. Testing was done using hydrilla plants in water with and without a layer of oil covering the surface.
Difficulty: Middle school
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