himalya
the elbur mountains
Mountain ranges are natural barriers because they are high. That makes it difficult or impossible for various forms of life to cross from one side of a mountain range to the other.
Denmark
the volcanic source that makes a mountain
Two Complete Water Borders
plates are part of a mountain that makes it move
Erosion
eartquakes
France is north of Spain and makes up the majority of Spain's northern borders. There is also the small country of Andorra that surrounded by France to the north and Spain to the south, so it too is north of Spain.
The Pacific Ocean makes up the western border of Ecuador. Peru is to the east and south. The nation of Columbia borders the north.
It borders the Arctic Ocean.
The state that borders Arizona, Nevada, and Idaho is Utah.