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