The name for such a hole is "caldera" which is a word of Spanish origin meaning "a pot" or a "cooking pot" (thing of cauldron!) - and this word is used because it resembles the shape of this hole.
Often the Calderas are filled with water forming lakes and often there is an island in the middle of the water.
I think the answer is number3
Oceans, rivers, valleys, mountains, plains, hills and glaciers are some examples.
Answer:
ሰላም!
the Challenges and Opportunities on industrial development in Ethiopia are:-
The major ones include unskilled labor forces with limited experience; limited infrastructure; external pressure from global market, shallow industrial research and development activities, underdeveloped market information system, problems related to trade logistics and limited promotion made on the resources
