Assess students' understanding of physical, chemical, and biological mechanisms governing soil carbon sequestration and turnover in temperate grasslands, including plant inputs (above- vs belowground), microbial decomposition and priming, pathways of stabilization (particulate vs mineral-associated organic matter), effects of texture, moisture and depth, disturbance and management (grazing, fire, fertilization, N deposition), and common measurement approaches (isotopes, fractionation, modeling).