Medical geographers have observed that the world-wide spread of HIV/AIDS from its hearth in Central Africa is best explained by a(n) diffusion pattern.

Ascientist observes hot water erupting from a vent in the earth. what most likely caused the water to rise and erupt from the vent? explain. the vent was lower than the water table. a well was drilled into a pressurized aquifer. a well with a mechanical pump was installed. the water was heated by magma or hot rocks.