Is the regular movement of individuals or populations each year during certain seasons. This leads to
cycles of immigration and emigration as organisms leave and
return

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

thinking it would be physical characteristics