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