The Circumstance- PAcific Belt is also known as Ring of Fire, Circum- Pacific Belt or Pacific Ring of fire.
It is called this way because the term" fire" is associated with volcanos and "ring" because of its length.
This is the area in the basin of the Pacific ocean where many earthquakes and volcanic activity happen. The belt follows a chain of islands like the Philipines, Japan, etc.
D, a sonic boom is only produced when a body is traveling faster than sound
I believe the question is according to the attached image.
The order of the diagram that would show primary succession in an area that had never before been occupied by living organisms is;
C,A, B, D.Primary succession occurs in lifeless areas; these are regions in which soil is incapable of sustaining life as a result of factors such as lava flow, newly formed sand dunes, or rocks left from a retreating glacier.