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