Assess learners' ability to estimate a household's annual carbon footprint from given data (electricity use in kWh, heating fuel, vehicle mileage), apply standard emissions factors to compute CO2e, evaluate the emissions impact of energy-efficiency measures (insulation, appliance upgrades, lighting, HVAC) and transportation choices (fuel-efficient vs electric vehicles, public transit, cycling/walking), compare reduction scenarios, and create a prioritized, cost-effective mitigation plan with estimated annual emissions savings.