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 | O | O | H |
| N | Y | J | B | N | E | V | G | V | A | E | N | F |
| E | K | F | G | O | Y | N | P | L | T | O | V | J |
| R | H | K | D | I | W | Y | S | S | I | Z | S | S |
| G | N | L | P | T | A | Q | A | T | B | O | L | E |
| Y | O | O | L | E | L | W | A | K | V | N | P | C |
| E | I | M | D | L | E | V | E | D | N | E | I | R |
| T | T | B | B | P | R | Y | Z | C | W | T | L | U |
| A | U | J | Q | E | X | P | L | O | I | T | W | O |
| M | L | M | S | D | Q | M | U | T | O | K | D | S |
| I | L | N | M | T | F | T | I | I | K | R | P | E |
| L | O | Q | F | E | L | B | A | W | E | N | E | R |
| C | P | V | J | P | C | O | O | A | X | E | V | Y |
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