The steeper the slope of the track the quicker the toy car will accelerate.
 
        
                    
             
        
        
        
I believe it would be the bottleneck effect. hope that helps =)
        
                    
             
        
        
        
Answer:
the size of something from one end to the other; how long something is
-  Running race track
- tree 
 
        
                    
             
        
        
        
 
The zygosporangium of Rhizopus stolonifer function to
ensure the survival of the species by remaning dormat during unsuitable
conditions. I am hoping that this
answer has satisfied your query and it will be able to help you in your
endeavor, and if you would like, feel free to ask another question.