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