A federal government is the type of government that combines aspects of both unitary and confederal government. The United States has a federal government. 
        
             
        
        
        
Answer: over night it froze the top
Explanation:it’s a fridge
 
        
             
        
        
        
This would mean a change in base sequence, which is very important for the proteins to carry out their function. It could lead to a mutation and a change in the role of the protein.
        
             
        
        
        
D. Scientists use all of the above skills.