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 | R | S |
N | A | T | U | R | A | L | E | B |
E | M | A | G | M | A | C | M | I |
L | P | T | W | R | R | O | S | O |
T | Q | I | E | U | S | A | Z | M |
N | H | N | O | R | R | L | W | 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 | F | T |
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