Answer:
is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
Folic acid is the variable as it determines how DNA is formed, DNA contains the genetic materials that is passed across to offspring 
Explanation:
 
        
             
        
        
        
Answer:
The reactivity of acetic acid with various chemicals.
 
        
                    
             
        
        
        
Answer:
4. metabolism, growth, and evolution
Explanation:
Living organisms show different characteristics like respiration, movement, metabolism, growth, evolution, respiration, excretion, nutrition. Most of the microbes are microscopic and unicellular which means they are made up of only one cell but they are also living.
They perform three major types of activities like metabolism, growth, and evolution. This can be seen by culturing bacteria on suitable media. So in the medium, it can be observed that they consume the food present in media and extract energy from it through metabolic activities and are showing growth. All micro-organisms evolve due to mutation. So the correct answer is 4.
 
        
             
        
        
        
Adaptive radiation is an evolutionary activity which creates several new species out of a single specie. Darwin embraces this philosophy that the finches evolve from an ancestral finch by adapting to the different environment.