Answer:
Geostrophic wind D) flows parallel to contour lines of upper-air pressure .
Explanation:
Geostrophic wind -
Air parcel generally moves from higher pressure to lower pressure due to pressure gradient force and left or right deflection due to coriolis force. When this deflection takes place a time comes when pressure gradient force and coriolis force becomes equal and the air parcel moves parallel to isobar then the winds are called geostrophic winds .
This is to avoid potential turbulent air below. Hope this helps!
The greenwhich meridian line running through the center of the world
The one that has been a contemporary concern in northwestern china is : Religious Tension
The northwester part of china is the largest muslim community in China. There often a tension between the Muslims and the people who held Chinese original beliefs (Buddha or Taoism)
hope this helps
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