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