Answer: Migrants have contributed to the development and expansion of small businesses, which are the cornerstone for the Australian economy. They have contributed to the development of technology bringing to the country cutting edge technology in particular from Asia and Eastern Europe.
Explanation: i hope this helps :)
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)
Asthenosphere is the answer of this question. It best describes the all above mention properties.
Asthenosphere is the the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
