Why do shield volcanoes have weak eruptions? a. they feature magma with high silica content. b. they form calderas. c. they feature magma with very low viscosity. d. they have excess magma.

Eye injuries usually occur as a result of all of the following things, except: a) proper machine operation b) battery explosion c) falling or flying debris d) electric welding arc

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Which statement is true of web-based social media? a.they allow consumers to interact with and update content. b.they cannot be updated easily, as compared to print media. c.they are expensive to produce and maintain, as compared to print and television. d.they can exist independent of the internet.