1. earthquake measures 
2. b
3. seismograph
        
                    
             
        
        
        
I believe that you're question is referring to homeostasis
        
             
        
        
        
Answer: zooplankton, small nekton
Explanation:
 
        
             
        
        
        
Cladistics<span> is an approach used for biological classification in which organisms are categorized based on  their shared characteristics that can be used to traced to a group's most recent common ancestor.</span>
        
                    
             
        
        
        
Answer:
Has a Dorsal hallow nerve cord, a notochord pharyngeal pouches, and a tail that extends beyond the anus.  
Explanation: