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