The element germanium (Ge) was once use in the manufacture of transistors for radios. What other element has similar properties that
might be used for the same purpose?
1. Sn
2. O
3.Ga
4.Ga

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods