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