Unless you have some classified the answer is no. United Stated and Russia are not in an official Cyber War, although I would not be surprised if we would soon find out they are going at one another through those means.
Sound wave is a pressure caused by the vibration of something in a medium that transfers anergy, like air.
Answer:
Mercator
Explanation:
One of the most famous map projections is the Mercator, created by a Flemish cartographer and geographer, Geradus Mercator in 1569.
Gypsum is a chemical sedimentary rock.
