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