Answer would be True since Russia became Communist in 1917.
An ocean current is a continuous, directed movement of sea water generated by a number of forces acting upon the water, including wind, the Coriolis effect, breaking waves, cabbeling, and temperature and salinity differences.
When silicon atoms bond, then silicates form which are minerals in which such elements as potassium, calcium, magnesium and aluminum combine with the silicon atoms to form minerals like feldspars of different types or if it is just silicon and oxygen that bond then it forms quartz.
I believe the answer is Cordilleras
Hope this help, have a great night!
The economic system may be production,allocation,distribution,firms,and how the government responds to the economic problem.