It can withstand high heat and still add nucleotides which is used in the PCR.
        
             
        
        
        
Answer:
A half filled circle
Explanation:
In pedigrees, females are always denoted with a circle, and males with a square. Affected individuals usually have coloured or filled symbols, whereas unaffected individuals have an empty symbol.
In the case of carriers, this is often denoted as a half filled symbol. I.e. the shape is filled on one side and not the other, split down the middle). Sometimes a carrier of an <em>X linked</em> condition is denoted as a half filled, but instead of left vs right, the circle is filled with a smaller circle in the middle. 
 
        
             
        
        
        
He recognized and named Oxygen as well as hydrogen. 
        
                    
             
        
        
        
Answer:
Wet climates obviously have more water than driers climates. Metals, when subject to water have the tendency to oxidize (rust). Therefore, if water is barely present in a climate, then oxidation is also least likely to occur.
Explanation: