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цветение водорослей (... a bloom of freshwater algae that can sometimes turn red when it is exposed to high concentrations of sunlight.  unexplained-mysteries.com ART Vancouver) | |||
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| цветение воды | |||
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bloom of algae : 3 Phrasen in 2 Thematiken |
| Ökologie | 2 |
| Wasserversorgung | 1 |