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