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