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