Structures in plant leaves that open and close to maintain homeostasis are called stomata. This is where gases would diffuse in and out of the leaf.
        
                    
             
        
        
        
The DV is measured for results
        
             
        
        
        
Answer:
D. It is not a superordinate goal because it did not require both pet store owners to accomplish.
Explanation:
In this case, both pet stores are benefited and therefore it corresponds to a superordinate goal. 
 
        
             
        
        
        
Answer:
A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Now put that into your own words.
Explanation: