Which latitude is defined as 0 degrees?

The latitude defined as 0 degrees is the Equator. The Equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres. It serves as the baseline for measuring latitude, with locations north of the Equator expressed in degrees north and those to the south expressed in degrees south.

Understanding the significance of the Equator is essential in physical geography, as it plays a crucial role in climate patterns, biodiversity, and the distribution of sunlight throughout the year. The concept of latitude helps in navigation, cartography, and understanding global phenomena such as weather and ocean currents.

The other options relate to different latitudinal lines but are not designated as 0 degrees: the Prime Meridian is the 0-degree longitude line, while the Tropic of Cancer and the Tropic of Capricorn are each located at 23.5 degrees north and south of the Equator, respectively.