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