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