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