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