The axis,most probably, I have a Social Studies HW to do,and this question is hard
axial
The line that runs down the center of a dressage arena is called the Centerline.
Equator
"middle" is very arbitrary If you use the currently defined Prime Meridian as the starting point then the "middle" could be at 180° - - - which runs mostly through the Pacific Ocean. If you are looking down on the North Pole, then the Arctic Ocean is in the middle. If you run around the equator, then the Atlantic, Pacific, and Indian oceans lie in the middle. If you consider the middle to be the center of the Earth, then I don't think you could consider what occupies that space as a "sea". We believe the center of the Earth is solid.
Southern Alps
Congo River
arteries
down to earth ?
Equator
The Equator divides the Earth by the Northern and Southern hemispheres of the Earth, while the Prime Meridian divides the Earth by the East and West Hemispheres.
The pacific as a long ridge runs down the middle due to plate movement