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