The biological basis for assigning all human beings into a singe species is that there so many, even tons of living organisms living on earth. These organisms differ in their external and internal organs and so to differentiate them from them, they are being classified into kingdoms then classes then phylums then family.
        
             
        
        
        
Answer:
social anxiety disorder
Explanation:
social anxiety disorder is the fear of being judged by people or negatively assessing them, or rejected in a social  situation
 
        
             
        
        
        
In prophase the chromatin condenses into chromosomes. 
        
             
        
        
        
Answer: 1. (A bat food supply decreased.)
Explanation: