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