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