Work in groups and answer the questions: Is black carbon found in your city or neighbourhood? If so, where does if come from?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
   air pollutant      carbon emissions      comes from      cooking and heating      fossil fuels   
Black carbon is a common found in many urban areas around the world. Black carbon primarily the incomplete combustion of , biomass, and biofuels. Sources of black can include transportation (e.g., cars, trucks, buses), industrial processes, and residential (e.g., wood-burning stoves).