1. current is usually the flow of

1. Current is usually the flow of electrons.

Explanation:

The flow of charges through a wire or conductor is called electric current.

Either water (current in a river) or electrons (current in a wire.

conduction, convection, radiation

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