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