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