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