Which of the following is a way that southern africa became populated?
the shona spread from central africa.
the malagasy came from zimbabwe.
the bantu came from madagascar.
the san came from botswana.

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.