The SKA view of the Neutral Interstellar Medium in Galaxies

Two major questions in galaxyevolution are how star-formationon small scales leads to global scaling laws and how galaxiesacquire sufficient gas to sustain their star formationrates. HI observations with high angular resolutionand with sensitivity to very low column densities are some of the important observational ingredients that are currently still missing. Answers to these questions are necessary for a correct interpretation of observations of galaxyevolution in the high-redshift universe and will provide crucial input for the sub-grid physics in hydrodynamical simulations of galaxyevolutions. In this chapter we discuss the progress that will be made with the SKA using targeted observations of nearby individual disk and dwarf galaxies.