Answer:
C
Explanation:
Hope this helped! -Sierra<3
 
        
                    
             
        
        
        
Answer:
a mucus or a gelatinous sheath
Explanation:
Most species of cyanobacteria are enclosed in a gelatinous sheath which is made up of proteins.
 
        
                    
             
        
        
        
1. constant speed is a steady speed from start to finish, instantaneous is not constant from start to finish.
2. The average speed of the marble is 5 m/s  (meters per second). 
3. Rider 1 will arrive at the destination before Rider 2.
Hope This Helps!  : )
 
        
             
        
        
        
Answer:
i think iam not sure it is C
 
        
                    
             
        
        
        
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