sand dunes form from wind
 
        
                    
             
        
        
        
Answer:
 A portion of an aquifer that contains rock material that does not allow water to penetrate; often forms the base of unconfined aquifers and the boundaries for confined aquifers.
 
        
             
        
        
        
Stroma that's where energy is stored
        
             
        
        
        
OBSERVATIONAL LEARNING is associated with the fearless peer experiment. The experiment demonstrates OBSERVING OTHERS AND POSITIVE BEHAVIORS.
Fearless peer experiment is about a video show about a small boy who was having fun playing with dogs. What was seen inside the video encourages the watchers to lose the fear they have for strange dogs.
        
                    
             
        
        
        
Answer:
The pH of a solution containing 0.1 mM H+ is 4
Explanation:
The pH of any solution is given by the following mathematical equation -
![pH = -log[H_{+}]\\](https://tex.z-dn.net/?f=pH%20%3D%20-log%5BH_%7B%2B%7D%5D%5C%5C) ----------- Equation (A)
----------- Equation (A)
Where, 
 = the concentration of hydrogen ion in the solution.
 = the concentration of hydrogen ion in the solution.
Given 
 
 
= 
Substituting the given value in equation (A) , we get -
![pH = -log[10^{-4}]](https://tex.z-dn.net/?f=pH%20%3D%20-log%5B10%5E%7B-4%7D%5D)

Hence, The pH of a solution containing 0.1 mM H+ is 4