Answer:
real subtances? look around you and you'll find out
Explanation:
 
        
             
        
        
        
One redo our could be a body of water like a dam as such, and another is something like a retention pond, taking in water
        
                    
             
        
        
        
Answer:
Mercuric particles is the right answer  
Pseudomonas has a plasmid containing the mer operon that incorporates a quality for mercuric reductase catalyzing mercuric particle to an uncharged type of mercury. The inducer is mercuric particles.
 
        
             
        
        
        
They provide better depth perception and peripheral vision. 
 
        
             
        
        
        
Water boils at 212 degrees farenhiet