Answer: a low tide I would say around 5:02a.m.
Explanation:
The best shelling opportunities tend to happen during low tide, where the shells that are normally covered by water are left exposed on the sand.
 
        
             
        
        
        
Your answer is A. during an extended surgical procedure
        
                    
             
        
        
        
Speed is an expression of how fast an object moves. An object's speed is the rate of the total distance it travels in a certain amount of time. Units of speed include miles per hour (mph), centimeters per second (cm/sec or cm/s), meters per second (m/sec or m/s), or kilometers per hour (kph or km/hr)
        
             
        
        
        
Answer:
C
Explanation:
Add radio labeled actin sub units to a mixture of actin filaments in which conditions are favorable for polymerization. This would enable you to identify the plus end of actin filaments. 
Actin filaments are linear polymer of globular actin sub units Actin filaments have polarity. This means that the two ends can be identified due to structural differences.