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