Answer:
Prophase 
Explain:
The first step in mitosis, the nuclear envelope breaks down and chromosomes condense and become visible.
        
             
        
        
        
Answer:
Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive.
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.
The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.
Explanation:Goblet cell in your respiratory epithelium of trachea.
 
        
             
        
        
        
Mechanical is. the digestion that occurs
        
             
        
        
        
Organisms need nutrients in order to living organism
        
                    
             
        
        
        
The second one is the answer