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