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