| Answer | Crossword Clue |
|---|---|
| STERNO | Jelly used for fuel |
| STERNO | Jelly brand used for fuel |
| GUAVA | Fruit used for jelly. |
| PEAT | Turf used for fuel |
| GASES | Mixtures used for fuel. |
| BIOMASS | Natural material used for fuel |
| BIOMASS | Plant material used for fuel |
| BIOMASS | Organic matter used for fuel |
| DEGREEDAYS | Units used for measuring fuel needs |
