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