Frog, brass hook, and iron bar

Luigi Galvani
Alessandro volta

I think it’s the first one

Ithink true dkfkfkfkdkkdkdkdkddkdk

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.