Answer: D.) Plant D
Explanation: A control group is composed of the test subject(s) that do not receive any experimental treatment. In this case, Plant D is the control group because it does not listen to any music unlike the rest of the plants. 
 
        
             
        
        
        
What did you say about the cats in your room haha
        
             
        
        
        
Answer:
Grass
Explanation:
It is on the lowest level of the food chain/ trophic levels, meaning that it is the most abundent. Next would come mice, deer, then cougars. Hope this helps :)
 
        
             
        
        
        
The answer is c I’ve had this question before
        
             
        
        
        
Phloem is the first xylem the second