| 1 | Where, like the charcoal pears, the crows. | |
| 2 | Bush fires in Australia leave high levels of black carbon in the soil for hundreds of years. | |
| 3 | On the white door was written two two words "come in". | |
| 4 | At the moment, most eyes are on soot (or "black carbon", as jargon-loving researchers refer to it). | |
| 5 | Both agricultural burning and diesel engines yield dark sooty particles scientists call black carbon. |