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