What kind of model there is many kinds
        
                    
             
        
        
        
Answer: Human space exploration helps to discuss questions about our place in the Universe and the history of our solar system. Through addressing the challenges related to human space exploration we expand technology, create new industry, and help to foster a peaceful pro with other nations. 
 
        
             
        
        
        
Answer:
Women should stand by  at least two months after travel (or 2 months after  symptoms started to manifest if they get sick) before trying to get pregnant.The waiting period is longer for men because Zika stays in semen longer than in other body fluids.
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The lymphatic system includes a network of vessels, ducts, and nodes, as well as organs and diffuse tissue that support the circulatory system. These structures help to filter harmful substances from the bloodstream. Your Welcome.