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