When problems are more involved than a simple exchange or return, you want to make sure
a.
complain to top management.
c.
seek the of a third party.
b.
address the right source.
d.
take immediate legal action.

Which environmental change allowed people to travel by land between asia and north america a. human apaption to arctic environments b. the introduction to horses to north america c. the formation of ice sheets on land d. a rise in ocean temperatures