Amaglev train requires which of the following?
a. the track and the train must have the same mangetic poles
b. the track and train must have different magnetic poles
c. magnetic poles must alternate between the track and train at nearly the speed of light
d. a bolt of electricity must move between the track and the train

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

2b2t

explanation:

2b2t