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