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