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