Answer:








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Description
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to duplication
 
        
             
        
        
        
What graph are you referring to?
        
             
        
        
        
Answer:
Many human and physical factors affect population distribution and population density across the world. Physical factors that affect population density include water supply, climate, relief (shape of the land), vegetation, soils and availability of natural resources and energy.
 
 
        
             
        
        
        
Answer:
Animal ; prokaryote ; plant ; virus 
Explanation:
Animal:  An animal cell possesses cell membrane, ribosomes, lysosomes and nuclear membrane. 
Prokaryote:  In a prokaryotic cell, cell wall is present  such as bacteria, ribosomes are present  but nuclear membrane is absent
Plant: A plant cell possesses cell wall, ribosomes, nucleus and a large vacuole.  
Virus:  Viruses reproduces inside a cell  because they do not have their own energy producing system, nucleus is absent  but nucleic acid ( DNA or RNA) is present  
 
        
                    
             
        
        
        
Perception of pitch and sound intensity is the cocklear