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