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