Answer:
Runoff is nothing more than water "running off" the land surface. 
<h3>Explenation:</h3>
 Just as the water you wash your car with runs off down the driveway as you work, the rain that Mother Nature covers the landscape with runs off downhill, too (due to gravity). Runoff is an important component of the natural water cycle.
 
        
             
        
        
        
The statement above is FALSE.
Waste solvents are both flammable and toxic.
Waste solvents refers to the liquid waste obtained from the chemical processes that are performed in a laboratory. Such waste are labelled as hazardous, which means, they are toxic and harmful.
        
             
        
        
        
I think it is mitochondria. Yes, most likely it is.
        
                    
             
        
        
        
 
Answer: 
C
I inserted an image for reference.