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