Early spring 2018 was very cold. april 2018 was the second coldest on record for the state of linis. what feature in the jet stream was responsible for the below average temperatures? select one: a. ridge b. sting jet c. thermal block d. trough e. barotropic zone

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.