Answer:
The hardness rating is 4.
Explanation:
Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin.  This is where most Marbles, limestones, travertines, rate.
Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.
 
        
             
        
        
        
Answer: A
Explanation:
Caravan is just a parade in a different font
 
        
                    
             
        
        
        
The Kidneys.
The plasma passes through the kidney where it is filtered, a special filtration unit called "glomeruli" and then excreted as a low molecular weighted product into the urine. The purpose of our urine is to secrete waste products from the body. So you can see how the glomerular filtration mechanism of the kidneys plays a major role in the function of our bodies. The primary function of our kidneys is to filter out all the "bad stuff" in lamest terms.
-Current Medical Student (College Level)
 
        
             
        
        
        
Answer:
 i think it's the double helix
Explanation:
 
        
                    
             
        
        
        
Answer:
marine west coast, humid continental, humid subtropical
Explanation:
this should be right.