Because Thomson's cathode ray tube experiments led to a very important scientific discovery, the electron.
        
                    
             
        
        
        
<span>When an elephant flaps its ears to cool off, it is using a behavioral response to adapt to their environment/temperature. It's also known as stimuli responding to the the environment.</span>
        
             
        
        
        
Answer:
Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter.
Explanation: