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