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