If you're talking about one storm for each, then acid rain would erode more Because acid breaks down material much easier then water. 
(amusing they are falling at the same speed)
        
             
        
        
        
Answer:    1. Cancer   2. Blood virus  3. heart problems 
Explanation:
hope this helps
srry if I am wrong 
 
        
             
        
        
        
The outer core. A molten nickle- iron alloy.