Which two factors cause one part of earth to have summer while another part has winter? a. greenhouse gases and ozone in the atmosphere b. earth's tilted axis and its rotation around it c. trade winds and sea breezes d. earth's tilted axis and its revolution around the sun

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.