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