What kind of magma produces a quiet volcanic eruption?

a. magma that is rich in silica
b. magma that is fluid
c. magma that is low in iron
d. magma that is low in silica

Which of the following energy sources is not an example of renewable energy? a. a wind turbine farm b. a clean-burning, coal-fired electric plant c. a hydroelectric dam d. a solar panel mounted on a home

At which point on the diagram do convection currents occur to drive plate movement?

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)