Should Soil Be Sterile?
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Students determine if the sterilization of topsoil is beneficial to seed germination and plant growth. They grow plants alongside control groups, make and record observations of plant growth and measure plant biomass.
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Infiltration Test: Exploring the Flow of Water Through Soils
Soil scientists gain experience with an infiltrometer can to determine the infiltration rates at different locations on campus. If you are using the entire unit, the class has already analyzed water flow and soil types, so they should...
4th - 12th Science