  Star-formation is one of the main processes that shape galaxies, defining its
stellar population and metallicity production and enrichment. It is nowadays
known that this process is ruled by a set of relations that connect three
parameters: the molecular gas mass, the stellar mass and the star-formation
rate itself. These relations are fulfilled at a wide range of scales in
galaxies, from galaxy wide to kpc-scales. At which scales they are broken, and
how universal they are (i.e., if they change at different scales or for
different galaxy types) it is still an open question. We explore here how those
relations compare at different scales using as proxy the new analysis done
using Integral Field Spectroscopy data and CO observations data from the
EDGE-CALIFA survey and the AMUSSING++ compilation.
