Homeostasis: A state of balance reached through reactions within a cell or organism. 
Metabolism: The total of all chemical reactions within an organism.
Organism: Any living thing that takes in food, grows, and reproduces.
        
             
        
        
        
I think it’s A blocking pathogen from entering block
        
             
        
        
        
Answer:
asexual reproduction 
Explanation:
it starts off with a single nucleus and ends up with 2, there is no obvious chromosomes or spindle fibres to suggest meiosis or mitosis
 
        
             
        
        
        
Hello! The correct answer for the question is: Burns.
I really hope this helped you! c: