文档介绍：Unit8NaturalDisastersInthisunityouwill:,andwehumanscantakemeasurestopreventthem;;;;-theme-relatedaudioandvideomaterials;-municationSkillsPartVAssessmentLogPartITheme-??Lead-inquestions:Unit8》PartI》SectionI》Lead-inquestionsWordBankUnit8》PartI》SectionI》WordBankUnit8》PartI》SectionI》WordBankNotesUnit8》PartI》SectionI》NotesTheUnitedStatesGeologicalSurvey(USGS),itsnaturalresources,,concerningbiology,geography,geology,-》PartI》SectionI》,.(Nobodyhasseenanythinglikeitin9,000years.)FF________(Theyarelookingatabout170thatcouldpotentiallyerupt.)’,》PartI》SectionI》Task1F____(MostofthevolcanoesarealongthewesterncoastoftheUSandupthroughAlaska.)