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