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