Answer:
nonnative species
Explanation:
just learned about it on Edge
 
        
             
        
        
        
Answer:
Explanation 
the two basic difference between RNA and DNA are 
RNA is single stranded while DNA is double stranded 
RNA contain uracil and DNA contain thymine
 
        
                    
             
        
        
        
By intruding mutations, which are the ultimate source of biological diversity. I think this is it.