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