| 1 |
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preservation |
| 2 |
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ecosystem |
| 3 |
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industrialization |
| 4 |
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desertification |
| 5 |
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exploitation |
| 6 |
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waste |
| 7 |
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consumption |
| 8 |
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sustainable |
| 9 |
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contamination |
| 10 |
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extinction |
| 11 |
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recycle |
| 12 |
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organic |
| 13 |
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pollution |
| 14 |
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renewable |
| 15 |
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conservation |