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