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