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