When a biologist counts the number of zebras in a population each year and notices an increase in the zebra population, this would be an example "of <span>observation"</span>
        
                    
             
        
        
        
1.) Cladogram 
2.) taxonomy
        
             
        
        
        
Carbon is the basic element for living thing
        
             
        
        
        
The best way to avoid measurement error in an experiment is being shown in the option C. instrument precision which means that a tool is controlled very carefully in order to get the most accurate result, and the answer for your question is D. misreading the instrument as it is an opposite of what I have just said.