From the lower plate which melts in the earths mantle.
It is an octagon. If an internal angle of an octagon is greater than 180°, then it’s called a concave octagon.
Answer:
Mountain formation
Explanation:
Subduction zones always have mountain ranges caused by plate subduction.
Answer:
Part of this border follows a natural boundary.
Explanation:
The answer is this one because Its a natural line between texas and Mexico and there are no mountains
