The answer would be E, it shows students how the different environments appear, since you can visually see it.
        
             
        
        
        
Answer:
Its right you dont have to change anything
 
        
             
        
        
        
Answer:
in some cases this is true a compound is a mixture of elements although it is actualy false the diffrence is actualy baced on what elements it is made of like sulfur Dioxide is when sulfur reacts with the contents of the air when burning and reacting but they arnt always diffrent most caces it is just what element you use. 
Explanation: