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