There are different materials of raw water, but also the raw water comes from ponds,rivers, and oceans but they might be good sometimes, and gas not been treated and has bacteria or mold buy that is not good.
        
                    
             
        
        
        
I may be wrong but i think that they are 
1. turbines are added under the water and when the movement of water effects that is uses power to gather electricity 
2. there are big barries in the water that spin the water around and then that in turn creates energy
        
             
        
        
        
Answer:
<h3>MEE TOO I DONT UNDERSTAND THIS QUESTION!☡</h3>
 
        
             
        
        
        
Answer:
mosquitoes
Explanation:
more population means that they will eat more (decrease in mosquito population)
 
        
             
        
        
        
By contracting, muscles pull on bones and allow the body to move. ... Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor. The muscle that contracts to cause the joint to straighten is called the extensor