Chemical abundances of stars belonging to 3-pop and UFDs. From top to bottom, we present the [Sr/Fe], [Ba/Fe], and [Mg/Fe] abundances as a function of [Fe/H]. The green points represent pop 3 stars with available abundances from the literature, while the gray points indicate abundances from UFDs, as indicated in the label. Downward arrows indicate upper limits. Iron abundances are from the studies in the literature.