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