Land use
Energy
Advertisements
Login to be the first to rate this puzzle!
BIOFUEL
BIOMASS
COAL
ISOTOPES
KEROGEN
MAGMA
MELTDOWN
MINERAL
NATURAL
REMOVAL
RESOURCE
RESOURCES
| K | E | R | O | G | E | N | K | S |
| L | E | U | F | O | I | B | E | M |
| A | O | E | L | A | O | C | D | A |
| R | N | H | E | L | R | N | Y | G |
| E | N | A | T | U | R | A | L | M |
| N | B | I | O | M | A | S | S | A |
| I | I | S | O | T | O | P | E | S |
| M | E | L | T | D | O | W | N | D |
| R | E | M | O | V | A | L | R | I |
Advertisements
