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