Negetive ion is made by gaining an electron
 
        
                    
             
        
        
        
Explanation:
Water is a polar molecule. While the overall charge of the molecule is neutral, the orientation of the two positively charged hydrogens (+1 each) at one end and the negatively charged oxygen (-2) at the other end give it two poles
 
        
                    
             
        
        
        
Answer: 
embryos (the organisms early stage foetal development )
        
                    
             
        
        
        
They are usually called Savannas, sometimes they are also called Prairies
 
        
                    
             
        
        
        
C waning crescent and waxing crescent