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