An example of an dramatic environmental event can be deforestation, or it can be animals losing their homes.
 
        
             
        
        
        
B. inferior
because it is definitely not any of the others
        
                    
             
        
        
        
Intestine, the intestine digests food involuntary.
        
                    
             
        
        
        
Answer:
Protons are positive while nuetrons are negetive.
Expland nation:
 
        
             
        
        
        
D.  A variable or alteration to one part that affects an entire system
Explanation:
When talking about natural and physical systems, change is a variable or alteration to one part that affects an entire system. 
Systems are groups of processes that have the same overall function. There are several types of interacting components that makes up both physical and natural systems in our world.
- The part of  system is related and interconnected via the changes they undergo. 
- Changes typically causes variation or alteration of parts of a system. 
learn more: 
Biogeochemical cycle brainly.com/question/3509510
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