<u>Answer:</u>
The type of change that was responsible was “histone acetylation or DNA methylation”.
<u>Explanation:</u>
- Histone acetylation is the process that involves the epigenetic adjustments that functions in the transcription process while regulating DNA. 
- Histone acetylation or DNA methylation is the major component of the gene regulation while passing from one generation to another. 
- The Acetyl groups are hooked up to lysine’s in histone tails so their charges play a vital role to avoid the histone tail to bind with the other molecules.
 
        
             
        
        
        
True... examples: the spine helps you stay up right which would help for structure and the skull help protect the brain which would be protection
        
                    
             
        
        
        
Answer:
Due to urease activity, bacteria are able to use urea as a sole nitrogen source and produce ammonia, which increases the pH in the proximal environment, causing Ca2+ and CO32- to precipitate as CaCO3.
 
        
                    
             
        
        
        
The person would have a problem with his metabolism.<span />