<span>rocks undergo this when stress builds up past a certain point, called the ... is any fracture or system of fracture or system of fractures along which earth ... the fracture is caused by horizontal shear and movement is mainly horizontal </span><span>many kind of rocks that make up Earth's crust fail when stress is applied too quickly ... The resulting fracture or system of fractures along which movement occurs.</span>
        
             
        
        
        
Pretty sure the answer would be C, because you need the warm and cold air to mix.
        
             
        
        
        
Rainwater picks up carbon dioxide from the air and as it percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone along the joints, bedding planes and fractures, some of which become enlarged enough to form caves.
        
                    
             
        
        
        
Electrical synapses, I believe.
        
             
        
        
        
Answer:
I believe it is A.
Explanation:
Im not 100% sure though so I'm so sorry if it's wrong.