13-2 Word Scramble
R P D E O I
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| Term | Definition |
| period | a portion of time |
| pollutant | chemical and smoke particles that cause pollution |
| smog | thick haze of smoke and chemicals |
| taiga | large coniferous forests |
| decline | a change to a lower state or level |
| permafrost | permanently frozen lower layers of soil found in the tundra and subarctic climate zones |
Created by:
akennon
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