Volcanic bombs are . A. volcanic fragments that were ejected while still soft or molten B. explosive bodies of lava with high volatile content C. volcanic fragments that were already solid rock before being ejected during an eruption D. used by geologists to set off small eruptions in volcanoes that are deemed potentially dangerous

C. volcanic fragments that were already solid rock before being ejected during an eruption

Explanation:

A volcanic bomb is a mass of molten rock which is larger than 2.5 inches in diameter, it is formed when a volcano ejects viscous fragments of lava during an eruption like it states up in the answer. They cool into solid fragments before they reach the ground or they turn into solid rock before landing the ground.

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the cordillera states and grand canyon are along the southwest u.s. and northern mexican pacific.

the great plains and southwest desert are also the prairie and home to many earthquakes too .

the coastal plains have poor soil and many factories started in the south.

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chinese civil war took place over a long period of time between 1927 and 1950. the war was interrupted when japan invaded china in 1936 and by world war ii. the war was fought between the nationalist government of china, also called the kuomintang (kmt), and the communist party of china (cpc).