Land use
Energy
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BIOFUEL
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ISOTOPES
KEROGEN
MAGMA
MELTDOWN
MINERAL
NATURAL
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RESOURCE
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| S | M | M | X | B | V | S | M | F |
| E | E | X | K | I | S | E | I | E |
| L | L | C | E | O | S | P | N | L |
| A | T | A | R | F | A | O | E | A |
| R | D | M | O | U | M | T | R | V |
| U | O | G | G | E | O | O | A | O |
| T | W | A | E | L | I | S | L | M |
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| N | E | C | R | U | O | S | E | R |
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