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