And underground water flow is called what

ground water

Explanation:

Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations. ... The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology.

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without