Answer:
corona
AND TEENAGE MUTANT NINGA TURTLES
Explanation:
 
        
             
        
        
        
<span>The answer is Monarch butterflies migrating southward.   This describes the innate animal behavior,  </span>Monarch Butterflies perform one of the longest migration known in insects.  Starting from North America, they spend their summer in North America, and migrate south to Mexico for the winter.<span>
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it is b because you see take a ruler and measure it
 
        
                    
             
        
        
        
Answer:
B
Explanation:
Chemistry starts with the atom as this is the building block of all chemistry.
The cell, nucleus, and enzyme are all part of biology and not chemistry (at this level at least)
 
        
                    
             
        
        
        
Explanation:
they are all related to CO2 in a way