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