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