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