Thousands of restaurant workers lose their jobs because a recession has reduced the number of consumers who can afford to eat out. This is an example of unemployment. Group of answer choices

Frictional

Structural

Seasonal

Cyclical

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