The question is incomplete. The complete question is attached below.
Answer:
1. DNA is the polymer of deoxyribonucleotides that contain the nitrogenous base, pentose sugar and phosphate group. The phosphate is attached with the 3 C position of the deoxyribose sugar. This leads to teh formation of phosphodiester bond.
2. The DNA backbone consists of phosphate and sugar. The nitrogenous bases are inserted inside the DNA molecule. These nitrogenous bases are linked together by the hydrogen bonds.
3. The adenine binds requires two hydrogen bonds to bind with thymine. This provide complementary nature to the DNA molecule. Uracil is present instead of thymine in RNA .
4. The guanine binds requires three hydrogen bonds to bind with cytosine. More amount of energy is required to break their bonds.
 
        
             
        
        
        
A giraffe often has to to be aware of its surroundings since they could get ambushed by a predator thats why they mostly stay in pairs or groups
        
             
        
        
        
<span>The exfoliative toxin is responsible for a skin disease called staphylococcal scalded skin syndrome. This exotoxin, exfoliatin is produced by Staphylococcus aureus and it induces the formation of fluid-filled blisters with easily ruptured, thin walls, usually in infants. Exfoliatin has the protease activity which causes peeling of the skin by destroying adhesion between keratinocytes (skin cells).</span>
        
             
        
        
        
It's 58 to 68 days 
It is known as Gestation period