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