You decide it is either a natural or artifisial boundry......
Ohio River
waterfalls
it is Sea's
prudhoe is an example of what kind of physical feature
Bays
rivers
Its a divergent boundary
An island is a physical feature that is completely surrounded by water. A harbor, on the other hand, is a sheltered body of water where ships can anchor and dock.
convergent boundary.
An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.
It's a divergent plate boundary.
Thingvellir National Park in Iceland sits on the Mid-Atlantic Ridge, a divergent boundary where the Eurasian and North American tectonic plates are moving apart from each other. This geological feature creates a rift valley with visible crack formations on the surface.