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