The distance from earth to the sun, as measured at 149,597,870.691 kilometers, is called
a. the earth/sun continuum.
b. an astronomical unit.
c. the speed of light.
d. an orbital distance.

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)

Which of the following is not a reason why shenzhen, china, is considered an emerging global city

East asia’s is dominated by dry highlands and grasslands. a. north and east c. north and west b. south and east d. south and west