Continental drift.
The two continents that Pangaea separated into are Laurasia in the northern hemisphere and Gondwana in the southern hemisphere.
which two continents are separated by the Ural mountain range
No one person achieved this. The continents separated themselves (and still move today); it's plate tectonics.
the world.
All the continents used to be a part of one land mass and separated. This supercontinent was Pangea.
oceanic spreading ridges
No, Pangaea separated into two main supercontinents called Laurasia and Gondwana. These two supercontinents eventually broke apart to form the continents we have today.
Europe and Asia are separated by the Ural Mountains. The Ural Mountains act as a natural boundary between these two continents.
Animals
America and Europe
When the continents separated, it is referred to as continental drift or plate tectonics. This is the theory that explains how the Earth's continents move and change position over time due to the movement of tectonic plates.
Plate tectonics