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