Answer:
Salinity in an estuary varies according to one's location in the estuary, the daily tides, and the volume of fresh water flowing into the estuary. In estuaries, salinity levels are generally highest near the mouth of a river where the ocean water enters, and lowest upstream where freshwater flows in.
Explanation:
 
        
                    
             
        
        
        
Gravitational is only attracted and electromagnetic is both atrractive and repulsive since it depends what you are talking about
        
             
        
        
        
The correct answer should be: Bromide
        
             
        
        
        
Effacement: The cervix – which is normally long and thick, measuring about 1-2 inches, starts to get shorter and thinner. This process is known as effacement. As the cervix gets more and more effaced, it gets shorter and shorter and “pulled up” into the lower part of the uterus.
Dilation: At the same time, the cervix softens and begins to open up – known as dilation. This widening, allows a smooth passage for the baby’s head and the rest of the body from the uterus into the vaginal canal.
 
        
             
        
        
        
Lysosomes are organelles that break down waste material so they clean up waste basically so the body system that has the closest function to lysosomes is the excretory system