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Project title Using Thlaspi plants to clean zinc-contaminated soilFeatured science projectScience project video
Difficulty Level High school
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This science fair project was conducted to find out the effectiveness of using the Thlaspi plant to treat zinc contamination of soil.  

Instructions preview
1. For this science fair project, the independent variable is the number of cycles for planting the Thlaspi plant in the soil. The dependent variable is the parts per million (ppm) of zinc in the soil. This is determined by sending the soil samples to an independent laboratory for testing. The constants (control variables) are the amount of the soil, the surface area of the container, the number of plants and the growth cycle of the plants. 2. Label the 5 small containers as “Initial”, “1st cycle”, “2nd cycle”, “3rd cycle” and “4th cycle”. Pour a small amount of .....
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