In a cladogram ,when does a group of organisms break off?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.