| Answer | Crossword Clue |
|---|---|
| PEAT | Fuel found in wetlands |
| AMYLS | Hydrocarbons found in fuel oil. |
| SEACOAL | Fossil fuel found in coastal veins |
| OIL | Fuel found in all three theme entries |
| peats | decomposed vegetable matter found in bogs, cut and dried for fuel |
| peat | decomposed vegetable matter found in bogs, cut and dried for fuel |
| ethane | a colorless odorless gaseous alkane C2H6 found in natural gas and used as a fuel |
| propane | a heavy flammable gaseous alkane C3H8 found in crude petroleum and natural gas and used especially as fuel and in chemical synthesis |
