A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
        
                    
             
        
        
        
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What is the problem... nothing is listed??
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The oxygen in the water molecule attracts the most electrons and in so doing attracts a slightly negative charge.
        
             
        
        
        
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Hope this helps :)
https://www.sciencedirect.com/topics/engineering/nitrogen-source
Think this is the website you're looking for 
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The term "eusocial" was introduced in 1966 by Suzanne Batra, who used it to describe nesting behavior in Halictine bees. Batra observed the cooperative behavior of the bees, males and females alike, as they took responsibility for at least one duty (i.e., burrowing, cell construction, oviposition) within the colony