Environmental issues
Environmental issues
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CLIMATE
CONSERVATION
DEPLETION
ECOSYSTEMS
ENERGY
EXPLOIT
OZONE
POLLUTION
RENEWABLE
RESOURCES
WASTE
| I | K | R | F | B | X | W | O | Y | R | S | Q | K |
| J | N | W | A | S | T | E | O | N | D | P | R | G |
| N | T | O | Q | L | K | U | F | O | A | Y | E | R |
| R | I | Z | I | D | C | Y | K | I | B | S | N | E |
| R | O | O | K | T | G | O | U | T | Y | R | E | G |
| E | L | N | M | R | A | U | W | E | K | F | W | C |
| S | P | E | E | R | S | V | I | L | J | L | A | R |
| O | X | N | J | O | O | F | R | P | C | I | B | C |
| U | E | C | O | S | Y | S | T | E | M | S | L | K |
| R | B | P | L | T | U | D | Z | D | S | D | E | M |
| C | A | G | Q | M | R | R | K | B | S | N | R | Y |
| E | Q | J | O | N | O | I | T | U | L | L | O | P |
| S | X | E | S | A | D | E | T | A | M | I | L | C |
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