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