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