Sediments that roll, slide, or hop along the bottom of a stream channel are referred to as the sediment of a stream

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

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)

What landform caused by water erosion and deposition is shown in the image?