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