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