Mechanical is. the digestion that occurs
        
             
        
        
        
Answer:
Meiosis
Explanation:
Mitosis creates an identical set of daughter cells to the parent cells through asexual reproduction but meiosis creates a set of sex cells that are identical to each other but not to the parent cell and this is through sexual reproduction.
 
        
             
        
        
        
The answer is true. It is because the activated sludge
process made use of the aeration in which air being mixed with a substance
together with a bacteria and protozoa that is in a biological floc that will
help treat the wastewater. 
 
        
             
        
        
        
yes, and???????, you need to put more detail, that would be considered a Statement not a question.