Answer: a
explanation: it’s not really a downside but :/
        
             
        
        
        
Answer:
Approximately <u><em>15-20%</em></u> percent of adolescents and young adults have engaged in at least one nonsuicidal self-injury behavior, often with the goal of decreasing high levels of distress and eliciting help from others.
Causing non-suicidal self injury behavior is one of the forms of abnormal mind in which a person tries to harm himself just to release some tension or to attract other people's intentions. This phenomenon is becoming more common in today's world. 
 
        
             
        
        
        
Natural selection is a gradual process where biological traits become more or less common in a population depending on the usefulness of the trait. 
C. Over time, species evolve by adapting to their environment. 
Insecticide resistance developed through d. natural selection. 
        
             
        
        
        
Answer:
I'm pretty sure it's C) Accumulated
Explanation:
Accumulated verb in the dictionary is: past tense: accumulated; past participle: accumulated
So I would think that it does not have anything to do with division of cells, or the process.
I'm sorry if this is not right. I hope it is though.
Have a nice day! Bye :)
 
        
                    
             
        
        
        
Answer:  B. secrete enzymes that kill bacteria
Explanation:
Paneth cells, so-called because they were first described by Dr. Josef Paneth in 1888, are pyramidal cells, with the nucleus in the basal position, and with large granules in the apical position. Its first isolated specific product was the lysozyme, a bactericidal substance, by Alexander Flemming. These cells play an important role in innate immunity in the small intestine, producing a wide diversity of antimicrobial peptides and enzymes such as lysozyme itself, cryptidines, defensins and a lectin with bactericidal properties.