Population density  =number  of   individual  divided  land  area
land  area  should  be  in  square kilometers
therefore 120  ha  =120  x0.01=1.2 square kilometer  since   1 ha=0.01  kilometer  square
total  population=  (80  x  1500)/100=1200
population  density   is therefore=1200/1.2=1000
        
                    
             
        
        
        
Certain Protiens, amino acids form protiens
        
             
        
        
        
The answer is Iron, this is the important mineral that she
needs to obtain as this will help her in her ways to cardiovascular fitness as
this mineral helps the hemoglobin to build in her body and for her t be able to
get enough nutrients.