Answer:
D.  atomic mass unit
Explanation:
The atomic mass unit is used for measuring atomic mass.
 
        
                    
             
        
        
        
Trilobites are found worldwide and evolved rapidly, making them easily distinguishable from trilobites of other time periods
 
        
             
        
        
        
The correct answer is: the wail of a loud car alarm.  
Sensory adaptation is a term that refers to the changes that stimuli can trigger on the sensory receptors. The process involves changes in the receptors' sensitivity and it is believed that all of the senses exhibit this adaptation. In particular, the sense of touch can quickly adapt to hot and cold stimulation, but not when the stimulus is extremely intense (such as too hot or too cold). Also, our olfactory sense presents the characteristic of odour fatigue. A prolonged exposure to a specific smell leads to a temporary inability to sense this smell and this is a type of sensory adaptation. Finally, 
our hearing undergoes a sensory adaptation as well, but not when it comes to sudden, unexpected and instantaneous loud noises. That is why the wail of a loud car alarm will be the least likely to cause sensory adaptation.
        
             
        
        
        
Nucleic acids are made up of nitrogen bases, sugars, and phosphates.
        
             
        
        
        
Cell reproduction is MOST applicable to growing and developing in organisms. Hope this helps!
Answer: GROW and DEVELOP