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 | L | L |
N | E | R | K | B | L | E | A | A |
A | L | C | E | F | E | P | V | R |
T | T | O | R | H | U | O | O | E |
U | D | A | O | U | F | T | M | N |
R | O | L | G | L | O | O | E | I |
A | W | E | E | L | I | S | R | M |
L | N | B | N | S | B | I | E | G |
M | E | C | R | U | O | S | E | R |
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