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