Which two continents are the most densely populated

Where does oxidative phosphorylation take place

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 timelines above accurately represents the order of historical events in canadian history? a. one (1) b. two (2) c. three (3) d. four (4)