They all have something in common
        
             
        
        
        
The Galapagos islands. the grants studied finches on these islands to learn more about evolution
        
             
        
        
        
Answer: we can make observations directly by seeing, feeling, hearing, and smelling, but we can also extend and refine our basic senses with tools: thermometers, microscopes, telescopes, radar, radiation sensors, X-ray crystallography, mass spectroscopy, etc. And these tools do a better job of observing than we can!
 
        
             
        
        
        
In most situations, the fittest insects most likely to survive as compared to least fit insects because of the healthy body of that organism. 
<h3>What is fitness?</h3>
Fitness can be defined as the ability to perform daily activities with endurance, and strength and resistance to disease, fatigue, and stress.
So we can conclude that the fittest insects most likely to survive as compared to least fit insects because of the healthy body of that organism.
Learn more about fitest here: brainly.com/question/1744168
 
        
             
        
        
        
A derived trait is a trait that the current organism has, but the previous one did not have.An ancestral trait is a trait that you, and your ancestors had.A vestigial structure is a structure that had some sort of use in your ancestor, but none in your current body