A map is a graphical representation of all parts of the earth on a flat surface. It provides a visual depiction of the Earth's surface, including its landforms, bodies of water, and other geographical features. Maps are commonly used for navigation, planning, and understanding spatial relationships between different locations. Unlike a globe, which is a three-dimensional representation of the Earth, maps are two-dimensional and can be easily folded and transported. Meridians, on the other hand, are lines of longitude that run from the North Pole to the South Pole on a globe or map.