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