A. One level is local, one level is regional, and one level is global. The global level covers the largest area.
B. The map is a flat drawing of part of Earth's surface. A globe is a spherical model of the planet. It is similar because is visualizes Earth.
C. A satellite collect images we cannot see from the planet's surface. So, it can be helpful to reveal information that we can't notice while we are on the surface of Earth.
*Hope I was helpful! :D