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