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