Answer :
Final answer:
The Antarctic Circle is a major circle of latitude at 66 degrees, 30 minutes south and is parallel to the equator. It marks the point beyond which there is a period of continuous daylight or darkness for at least one day of the year, due to the tilt of Earth's axis.
Explanation:
The subject in question is the Antarctic Circle, which is a significant circle of latitude situated at 66 degrees, 30 minutes south latitude and is parallel to the equator. The Antarctic Circle is one of the five major circles of latitude that mark maps of the Earth. It is noteworthy that all lines of latitude are parallel to the equator, which is the starting point for measuring latitude, set at 0 degrees.
Important parallels also include the Tropic of Cancer and the Tropic of Capricorn, which lie at 23.5 degrees north and south of the equator, respectively. The Arctic Circle is the counterpart to the Antarctic Circle in the Northern Hemisphere located at 66.5 degrees north latitude. These circles are significant because they mark the points beyond which, for at least one day of the year, there is a period of continuous daylight or darkness. This occurs because of the tilt of the Earth's axis in relation to its orbit around the Sun.
