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