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