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