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