What major mountain range separates the european part and asian part of russia?

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

Explanation:

The Ural Mountains form the natural physio graphic 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.

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2

Answer decreased soil salinity;