The boy who ran for class president is the football captain.
The correct pronoun is who.
The pronoun which is used for objects, not people. 
        
             
        
        
        
Answer:
I'm dying of embarrassment
my life is ruined
 
        
             
        
        
        
10. original
11. by
12. if you don't mind
13. David
14. a new red bike
15. I relaxed after a long day and put on the record
16. wrapping
i think these are right does this help?
 
        
             
        
        
        
Answer:
B. A comparison between a whirlpool and a black hole is being made.
Explanation:
In this text, the author explains how a whirlpool works. He uses the example of a fish in order to explain this mechanism to the reader. The author describes the way the fish would have to swim in order to resist the force of the whirlpool. The author then tells us that the mechanism the whirlpool uses is similar to that of a black hole. Therefore, the items being compared are a whirlpool and a black hole.
 
        
             
        
        
        
Answer:
a ballooon filled with helium if sealed properly
Explanation:
balloons filled with helium will get stuck in the atmosphere