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