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