What is secondary carbon footprint?

• A. Measures energy consumption of households
• B. Measures direct emissions of CO2
• C. Measures land-use changes
• D. Measures indirect CO2 from the products we use e.g. from foods we eat

Answer: (D)

The idea behind secondary carbon footprint is the indirect CO2 emissions tied to the things we buy and use, across their whole life cycle. It measures the carbon released in producing, processing, transporting, packaging, and disposing of goods and services we consume—not the emissions from our own actions like heating a home or driving a car (those are direct or primary emissions). For example, the CO2 associated with producing the food you eat includes farming, processing, packaging, and shipping, all contributing to your indirect (secondary) footprint.