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