The Ural Mountains are the only mountains that separate two continents.
There is no hard and fast answer to this and many geographers do not consider Europe and Asia to be separate continents as there is no logical physical divide between them. However, the most likely answers would be 'Ural mountains', 'Caucasus mountains' and the 'Bosphorus strait'. As the question asks for 'one of the boundaries', any of these should suffice.
The river Nile does not have any special features.
no there are no special features found on mars...
yes it does have special features
The only body of water that makes any separation between the two is the Black Sea and the Bosporus.
no
no there are not.
their fat
I was expecting for a answer
wfh
yes
Mountains, valleys, coastline.