The correct answer is It would be more difficult for DNA to unzip since it would require more energy to break the bonds.
That is because it would most probably be a covalent bond and such a bond is stronger than a hydrogen bond which means that more energy would be needed to break it.
        
                    
             
        
        
        
Answer:
d
Explanation:
Your heart is an organ that’s largely made up of muscle. It has the vital function of working to pump blood to the organs and tissues of your body.
 
        
                    
             
        
        
        
The answer is a the nervous system
The nervous system is connected to your brain and controls each and every action in your body.
        
             
        
        
        
An Igneous rock can change from sedimentary to metamorphic and back again or vice versa. 
<span>Metamorphic rocks form from heat and pressure 
</span>Sedimentary rocks<span> are </span>formed<span> when sediment is </span>deposited out<span> of air, ice, wind, gravity, or water flows carrying the particles in suspension.</span>
        
                    
             
        
        
        
Answer:
A lot
Explanation:
am playing there around 195 counties and 7 continets my bad