Answer:respiratory system
Explanation:The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. The main structures of the human respiratory system are the nasal cavity, the trachea, and lungs
 
        
                    
             
        
        
        
Answer:
C
Explanation:
Due to the erosion of soils, no trees to protect the ground from drying out.
 
        
                    
             
        
        
        
For the pheasant question, it would be the top right graph as this shows an increase, then a further increase in the population of pheasants. 
For the population of the world graph, it shows positive exponential growth as it is a large amount of growth within a small time period
        
                    
             
        
        
        
Metaphase 
At the end of the phase the cell divides into two new cells