Which one of the following times would be the longest?
a. carboniferous period
b. paleozoic era
c. jurassic period
d. mesozoic era

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)

Countries trade with each other because resources are not evenly distributed across the globe. true or false

The cumberland plateau shares a ridge that juts into which two states