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