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