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.
Answer:
the sun
Explanation:
the sun is the main source of energy that drive water cycle
Answer: The transfer of the minerals of the earth to living organisms and then back to the earth again is called a cycle
Saturn is the most similar