Answer:
i don't know if im right but honestly i could be A B or C
Explanation:
but i would say if its humans adapting to the environment and if an animal probably the same thing but maybe A more than C 
 
        
             
        
        
        
Answer: The answer is the last option, Backflow of blood through a defective valve.
Explanation: Hypotension causes high blood pressure, and the other two options are not related to heart murmurs. A hear murmur is when the blood isn't flowing in the right direction causing the hear to beat irregularaly. 
 
        
             
        
        
        
<span>Chromatography because it is used in biochemistry laboratories used for identification, purification, and quantification of the protein mixture. It identifies the composition of stationery phases.</span>
        
             
        
        
        
It makes us aware of and gives us information regarding the diversity of plants and animals.
It makes the study of different kinds of organisms much easier.
It tells us about the inter-relationship among the various organisms.
It helps to understand the evolution of organisms.
It helps environmentalists to develop new methods of conservation of plants and animals.