Answer:
How everything on the earth are interconnected.
Explanation:
 
        
             
        
        
        
No, it is usually caused my moving water, such as heavy rain or rivers or oceans.
        
             
        
        
        
Answer:
Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air.
Explanation:
It will bounce. 
I believe that it is testable because you can do it at home. 
Independent variable is vinegar. 
 
        
             
        
        
        
Answer:
"...for many of our white brothers, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny."
(A)