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