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