What step in the rock cycle occurs immediately before sediments are laid down? a. layers form
b. heat and pressure are applied
c. lava cools
d. erosion breaks down rock

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

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)

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?