Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FIRE
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| B | G | N | I | N | R | U | B | C |
| I | P | H | E | A | T | R | H | A |
| D | E | E | L | S | R | E | L | P |
| E | T | A | A | L | M | M | I | R |
| N | R | T | O | I | O | A | G | O |
| E | O | L | C | S | F | I | H | C |
| R | L | A | I | S | F | N | T | K |
| G | L | E | K | O | M | S | I | A |
| Y | L | E | U | F | I | R | E | Q |
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