A vaccine is a substance that supports the body to produce antibodies and offer immunity in contradiction of a disease. A live attenuated vaccine comprises a version of the living microbe that has been destabilized because they are still alive this is the closest thing to an actual infection and will habitually lead the body to have a lifelong immunity after only one or two doses. A killed vaccine is created by killing the illness with chemicals, heat or radiation in which these vaccines are harmless but rouse a weaker immune reaction.
        
             
        
        
        
Answer:
because of how much water is in the ocean
Explanation:
there is so much water in the ocean, and 100 degres isnt quite boiling point. and the ocean is so big that even if there was one part of the world where it got hot enough boil and possably evaporate, the colder parts of the world still wouldnt.
 
        
                    
             
        
        
        
C. Lactic acid fermentation
        
                    
             
        
        
        
The sympathetic nervous system is a part of the autonomic nervous system that carries stress responses or "flight or flight" responses that involves feelings of rush. The activation of sympathetic nervous system therefore increases the heart rate. The parasympathetic nervous system is another part of the autonomic nervous system which is responsible for "rest and digest" responses that involves feelings of relaxation. The activation of the parasympathetic nervous system decreases the heart rate.