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- But some other scientists urge caution. Cottrell says that it's not always possible to know when a volcano will erupt. "The elapsed time between precursor activity and an eruption climax is highly variable," she says. "Scientists have documented precursor events that occurred from minutes to years in advance of eruptions." อ่านต่อเพิ่มเติม โรงเรียนวัดสวนขัน สาระสำคัญ เสียง
- Vložil: But some other v 06:51 dne 24.05.2022
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