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