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