Assess students' ability to apply carbon footprint calculation methods to quantify and compare greenhouse gas emissions from different transportation options (e.g., car, bus, train, bike) and dietary patterns (e.g., omnivore, vegetarian, vegan), including selecting emission factors, defining system boundaries and functional units (per km, per meal, per person-year), performing calculations, interpreting comparative results, and conducting simple sensitivity or scenario analysis to support low‑carbon choices.