Meridians of longitude measure distances and of the
a. north; south; equator
b. east; west; prime meridian
c. north; south; prime meridian
d. east; west; equator

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)

How does the bare soil surface type affect the amount of runoff

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic