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