If the potential difference between the inner and outer surfaces of a cell membrane is 75mV, how much current flows through a square area of membrane 1.0μm on a side?

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