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