Q. Which imaginary line, located at zero degree latitude, divides the earth into northern and southern hemispheres?
Answer: Equator
Notes: The geographic Equator divides the Earth into the Northern and Southern hemispheres and forms the imaginary reference line on the Earth’s surface from which latitude is reckoned; in other words, it is the line with 0° latitude. The equator is the only line on the Earth’s surface that is considered a great circle.

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