(Next time please insert a picture of The graph regarding to your question)
 
Answer: The answer is (A)
Explanation:
QR- Liquid Only 
RS- Phase Change Liquid-Gas
ST-Gas Only
This graph does not begin in the solid phase of water. It begins at 40 degrees Celsius in the liquid phase. Plateaus are phase changes. In this case, it’s a phase change from liquid to gas.
 
        
                    
             
        
        
        
A temperature scale whose zero point is absolute zero, the temperature of 0 entropy at which all molecular motion stops, -273.15° C<span>.</span>
        
                    
             
        
        
        
All are aspects of antibiotics resistance in bacteria.
• overuse of antibiotics in humans
• bacteria can reproduce so quickly
• any use of antibiotics will select for resistant bacteria
• overuse of antibiotics in livestock
        
             
        
        
        
Answer:
The human gene for your muscle protein is different from monkey muscle protein in 4 places and different from a chicken's gene in  25 places.
This is molecular biology, and this shows a little bit about evolution because it shows human, monkey and chickens share a common ancestor. 
Explanation:
The example shows some features about biology. Molecular biology is focused on all the components and elements of molecular cells. In this case, analysing muscle protein and genes is considering this type biology.
DNA is the origin of every living cell on earth and is unique for every species. The analysis of protein's DNA is a determination of how distant or close species are. 
There are many other ways to relate evolution to the different animals, species or cells. You can use fossil record, anatomy, reproductive isolation, embriology, among many others.