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(6)
5 In a paragraph, explain why the Earth's temperatures differ between
the equatorial and polar regions.
6 Why do you think it is important for people that seasonal differencesin paragraph explain why Earth temperatures differ between the equatorial and polar regions ​

Where are the statements so i can ?

Yes, it’s awesome
: )

The highest point of a hill (or mountain) is a single point.
a single point can only be precisely marked with a dot. 
putting on a contour line is impossible  on a single point because the contour line is created after multiple points that have the same hight are marked, and after that, all of those points are connected with a line that creates a closed area. so the highest point, as said above, is a single point, there are no other points with the same height, so the only possible way for it to be marked is with a dot, and there is no possibility for a contour line.