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 | D | D |
| O | H | J | L | H | E | A | T | B |
| A | R | E | M | A | I | N | S | U |
| L | U | B | M | D | N | C | M | R |
| F | O | S | S | I | L | S | O | N |
| F | I | R | E | I | C | I | K | I |
| T | H | G | I | L | L | A | E | N |
| L | O | R | T | E | P | L | L | G |
| M | T | I | Y | G | R | E | N | E |
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