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Energy
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BIOFUEL
BIOMASS
COAL
ISOTOPES
MAGMA
MANTLE
MELTDOWN
MINERAL
NATURAL
REMOVAL
RESOURCE
RESOURCES
| O | S | S | A | M | O | I | B | S |
| T | N | E | U | G | B | J | E | P |
| L | W | P | L | A | O | C | L | L |
| A | O | O | E | W | R | A | A | E |
| V | D | T | I | U | R | R | L | U |
| O | T | O | O | E | U | T | R | F |
| M | L | S | N | T | N | U | B | O |
| E | E | I | A | A | N | M | D | I |
| R | M | N | M | A | G | M | A | B |
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