How many cities have a population over 200,000 Name each

After railroads, the next revolution of transportation came with the development of (a) automobile (b) telegraph (c) steam engine

The image shows groundwater zones. which zone shows the water table? 1 2 3 4

Which of the following does not determine the type of magma to erupt from a volcano? a. temperature b. gas content c. viscosity d. silica content what kind of volcano forms from basaltic magma with low-viscosity and low-gas content? a. shield volcano b. stratovolcano c. composite-cone volcano d. cinder-cone volcano what is viscosity? a. a rising mass of mantle abnormally hot and / or wet b. a pool of magma beneath the overlying crust c. what causes a bend to occur in the rock layer d. a measure of a fluid's resistance to flow