Mutualism is the symbiosis when both are benefited !!
        
                    
             
        
        
        
I am pretty for sure the answer is roots.
        
                    
             
        
        
        
Answer:
my prediction is maybe, d. a container of pond water with acid added to it.
Explanation:
because if you say the effects of acid rain on pond water, you can try that kind of experiment to find your product.
 
        
             
        
        
        
Answer:
Explanation:
 In the upper thermosphere, atomic oxygen (O), atomic nitrogen (N), and helium (He) are the main components of air.