Instantaneous ejecta rates computed for a SSP of 1 M_⊙ and a Chabrier IMF. The contribution of the different main ISM elements are plotted with coloured solid lines: ¹H (red), ⁴He (purple), ¹²C (light grey), ¹⁴N (green), ¹⁶O (blue), and ⁵⁶Fe (brown). The total ejected mass and metal ejected mass are shown in black and dark grey, respectively. The contribution of wind ejecta and SNIa are plotted with dotted lines and dashed lines, respectively.