1)
How should we reconcile the current Pasuk, which lists Tzochar but omits Zerach, with the Pasuk in Parshas Pinchas (Bamidbar 26:3), which lists Zerach but omits Tzochar?
1.
Rashi (to Bamidbar 26:3): Tzochar and Zerach are one and the same person.
2)
Who was "Shaul Ben ha'Kena'anis?"
1.
Refer to Bereishis 46:10:1.