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