Plant cells have certain distinguishing features, including chloroplasts, cell walls, and intracellular vacuoles. Photosynthesis takes place in chloroplasts; cell walls allow plants to have strong, upright structures; and vacuoles help regulate how cells handle water and storage of other molecules.
        
             
        
        
        
Answer:
Mrs. Grayson, the much loved teacher of first grade, retired last year.
Explanation:
The subject of this sentence is Mrs. Grayson, and the sentence says she retired last year at age seventy two. "The much loved teacher" describes Mrs. Grayson, and should have a comma after (and before it).
 
        
             
        
        
        
It is important to calculate discounts independently to ensure that each discount is applied to the price of each product. ... It is also important to calculate them to know the real total price of the purchase you are going to make.
 
        
                    
             
        
        
        
Agreed, just a liiiiiittle too sus but hey, we all have our own levels XD