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