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