If a geologist found preserved mud cracks, he or she could conclude that the environment in which they formed . Group of answer choices was once covered by a glacier was once covered in wet mud has been subjected to a major climate change event was the site of a mass extinction event

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Explosive eruptions are the most hazardous, involving large volumes of tephra and gases emitted from the volcano. lahars, pyroclastic flows, ashfall, and many other volcanic hazards are commonly associated with explosive eruptions. explosive eruptions are very dangerous. basically, any form of hazard can occur.