I believe it is scientific laws.
        
             
        
        
        
Answer:
All of them should be checked
Explanation:
If you make a punnet square you will have F and f lining the top and sides. The inside boxes will be FF, Ff, Ff, and ff. FF and Ff are long fins and ff is short fins so both are possible. Hope that helps good luck. 
 
        
                    
             
        
        
        
Barometer is used to measure atmospheric pressure :)
        
                    
             
        
        
        
<span>✎ </span>A fish that normally lives in salty water is placed in a tank containing fresh water. The new environment with a higher solution will cause the fish cells to swell and burst.
Answer: C
Hope that helps. -UF aka Nadia
        
                    
             
        
        
        
Answer:
I would create a monster that has really long legs and is really big and so it would make people stay away from it, because they know it is going to hurt them if they go by him.
Explanation: