Name the four oceans of the earth according to size, largest to smallest?

The 5th term in a series of even number that begin 3x

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)

In the diagram, δgef and δhef are congruent. what is the value of x?