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