<span>The worlds most widely grown food crop is </span>wheat
        
             
        
        
        
Answer:
Enzymes serve as catalysts to many biological processes, and so they are not used up in reactions and they may be recovered and reused. However, in a laboratory setting, reactions involving enzymes can leave the enzyme unrecoverable. This process makes the enzyme at once less reactive but more stable. 
 
        
             
        
        
        
<span>Individual cells, as well as organisms, must maintain homeostasis in order to live too. One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane.</span>
        
             
        
        
        
I believe this is the answer you are looking for:
<span>C. The size and shape of their beaks</span>
        
             
        
        
        
Answer:
which structure does not belong to the pulmonary circuit?
A) left ventricle
B) right atrium
C) right ventricle
D) pulmonary trunk. 
please help and define the difference in pulmonary circuit and pulmonary circulation. thanks