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