What triggers the small earthquakes that occur around a volcano before an eruption? a.
upward movement of magma
b.
pyroclastic flow
c.
cooling magma inside the crust
d.
plate movements

Please select the best answer from the choices provided

A
B
C
D

Which of the following is evidence to the past existence of glaciers?

What is one difference between austria and switzerland? a. austria is landlocked. b. austria has more minerals resources c. austria has a strong tourism industry d. austria has a strong dairy cattle industry

Which statement about factories in the industrial revolution is not true? a) some of the first advances were in textile mills b) spinning machines used water power c) water power was replaced by steam power d) coal was imported to english factories for power answer d) coal was imported to english factories for power