Carbon Cycle in Soil Kit for Global Warming and Feedback Loops Chemical_Mineral Oil showing how current through an

showing how current through an iron core builds magnetic flux in student investigations

this Sudan III stain solution prepares samples for fat and oil visualization under the microscope

Plastic sheath and rubber hanging cap on this 12-inch yellow-backed spirit thermometer reading -10 to 110°C

Single-axis focusing geometry of this cylindrical lens lets students see how a curved surface forms line images

Versatile holder accepting either a 50mm-diameter lens or mirror

Carbon Cycle in Soil Kit for Global Warming and Feedback Loops Chemical_Mineral Oil showing how current through anCarbon cycle soil kit explores global warming through soil respiration measurement, ecosystem analysis, and climate chemistry investigation.