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