The answer is A agriculture
        
                    
             
        
        
        
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. 
        
             
        
        
        
D. Obviously because it was large and they didn't have a lot of supplies to go across also it was very deep.
        
             
        
        
        
Answer:
Option C is correct.
Folding.
Explanation:
In Geography, folding is a process whereby rock layers bend due to compressional forces.
Just as described in the question above, compressional forces mean that the two ends of the rock layers are being pushed inwards towards each other. The rock layer, just like the cloth layer described above, responds by bending or rumpling.
Hope this Helps!!!
 
        
             
        
        
        
Answer:
The largest amount of carbon is involved in natural fire biological processes in the oceans.
Explanation:
The exchange of carbon between the biosphere , hydrosphere , geosphere and atmosphere on the Earth , is called the Carbon Cycle.
The ocean contains a large active pool of carbon on the surface of the Earth , but in the deep ocean does not exchange with the atmosphere.
The amount of carbon from the biological process in the oceans is 50 % greater than any other.