Answer: Southern Europe has mostly mountains, while Northeast Europe is dominated by plains
Explanation: If we look at the attached map of Europe, we can see that, in addition to having access to a large number of seas, Southern Europe also has mountainous relief. This can be clearly seen from the map because the areas of Southern Europe are mostly marked with brown, yellow or orange, which is a symbolic representation of the mountains and the hills. Southern Europe is dominated by mountain ranges such as the Apennines, Pyrenees, parts of the Alps that extend to Southern Europe, the Carpathians, etc.
On the other hand, the area of Northeast Europe is represented in green, representing valleys, plains, etc. Northeast Europe is dominated by the Russian Plain, Ukraine, parts of Poland with flat plains.