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