Look at a map of europe and asia what mountain range separates europe from asia

The Ural Mountain range separates the European part and the Asian part of Russia.

Explanation:

The Ural Mountains form the natural physiographic boundary between the 'continents of Asia and Europe'. This mountain range is about 2500 kilometers in length and stretches approximately north-south from the Russian edge dipping into the Arctic Ocean in the north to the 'Ural River' in the south. The Urals host great biodiversity as they span a large area from the upper latitudes to comparatively lower latitudes.

The answer would be plant growth.

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;