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