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