- Examine the components which make up soil
- Demonstrate the impact of soil pollution
- Includes instruction guide
Help students gain a better awareness of environmental conditions in their area and in the world at large. The physical makeup of soil, including nitrate, phosphate, potassium, chlorides, oil and microorganisms, is explored in How Clean Is the Soil? Thermal and Sewage Pollution demonstrates how microorganisms and chemicals contribute to water pollution. All Kits include an instruction guide.