Answer:
d) a wall that was built as a boundary but is no longer considered a boundary
Explanation:
Take the Berlin Wall for example, it is a relic boundary because it no longer splits Germany into East and West Germany.
The definition for a relic boundary is a boundary that no longer exists as a boundary just a cultural landscape.
The earth isn't getting bigger even though the continents are spreading apart is because the continents are simply being shifted from one location to another, but no land or mass is being created. The mass of certain parts of the world is simply being displaced from one location on the earth to another or its shape is simply being changed by being pushed up or below the earth's surface.
Hello :)
Most of the pulling force that drives plate motion is produced ____________.
Most of the pulling force that drives plate motion is produced at mid- ocean ridges.
Hope I helped!
