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