A small change in a persons DNA can cause any number of mutations that may be completely harmless or fatal depending on where the mutation (change) occurs in ones DNA.
        
                    
             
        
        
        
Answer:
First, we will see its body structure and collect more information about it. Second , we will see the mode of reproduction i. e. sexually or asexually. 
Explanation:
We will observe structure of the body and cell. If this organism is eukaryotic and no cell wall so we can say that it belongs to kingdom animalia. We also observed its mode of reproduction i. e. sexual reproduction or asexual reproduction such as fragmentation, binary fission etc. 
 
        
             
        
        
        
Well considering birds follow humane rules, their selection and environment around them being thriving could effect their songs in a positive way. While a bird with a low selection of environmental stuff around them would effect their songs in a bad way giving off a more down manner.
        
             
        
        
        
Answer:
please give me brainlist and follow
Explanation:
An atom that gains or loses an electron becomes an ion. If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion (see page 10 for more on ions).