Comparison of the abundance ratios of APM 08279+5255 (APM 08279 for short), NCv1.143, and three archetype local galaxies – the CMZ of NGC 253 (Martín et al. 2021; Rangwala et al. 2014), ∼2 kpc nuclear region of NGC 1068 (Aladro et al. 2015), and NGC 4418 (Costagliola et al. 2015) – for the species detected in both APM 08279+5255 and NCv1.143. The abundance ratios of the galaxies are computed by dividing the column densities of each molecule by that of C¹⁸O, and these ratios are then compared among the galaxies. The horizontal axis is ordered by the increasing value of the ratio APM 08279/NCv1.143 (in the case of C³⁴S and HCN-VIB, where the value of NCv1.143 is missing, we use the ratio of APM 08279/NGC 253 for ordering). Circles are AGN-dominated (APM 08279, NGC 1068, and NGC 4418) over starburst-dominated (NCv1.143 and NGC 253) ratios, diamonds are comparisons between similar types, and crosses are starburst-dominated over AGN-dominated ratios. The upper panel shows the ratio of the two high-redshift galaxies over local galaxies, while the lower panel shows the ratio of AGN-dominated galaxies over starburst-dominated galaxies only.