Answer:
I'm going with B kinetic energy from ocean currents
The quartz is more resistant to abrasion and chemically more resistant than the feldspar. The result is that the quartz remains in the stream but the feldspar breaks down to clay or is dissolved.
(this is from coursehero.com)
Answer:
Italy long coastline had many major trade centers
Because of the need for water and other resources. Central Australia is mainly desert, and has a hot, dry climate.
