Answer:
All of the above
Explanation:
this is because a nation's boarder can be seperated by a body of water,mountain ranges and lines of latitude and longitude.
Very nice
very good lookin
better reals and calming

<u>There are three main types of reservoirs; valley-dammed reservoirs, bank-side reservoirs, and service reservoirs. Valley-dammed reservoirs are created in valleys between mountains. Usually, there is an existing lake or body of water.</u>