Imaginary lines going from the east to the west, but dividing the globe north and south? !

Well imagine cutting a pizza, from left to right (east to west). Once you have done that, you would have 2 sections left, a top and bottom (North and South)!

That is exactly what happens with the globe!

I hope I helped!

It is meant that like tapestry scientific theories often need to pull out since they are not relevant and often times the whole chain of theories may be pulled out.