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