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