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