Answer:
used to observe small objects, even cells
Explanation:
The image of an object is magnified through at least one lens in the microscope.
 
        
             
        
        
        
Answer: 2 cells, Prophase 1, chromosomes lining up at equator of cell, anaphase 1, four times 
Explanation:
 
        
             
        
        
        
The whale's flipper and tail flukes and fish fins are analogous structure as they have different structural formation but they perform the same function. 
Flipper and tails are locomotory organs in the whale  and helps the whale in propelling similarly fins in the fish assist the fish in swimming. Both the strcutures have evolved differently and are made of different materials. 
 
 
        
             
        
        
        
Water has the highest specific heat capacity of any sort/type of liquid. 
        
                    
             
        
        
        
Answer:
The bonds that are formed between nitrogenous bases are Hydrogen Bond.
Explanation:
When a hydrogen atom  interract with an electronegative atom such oxygen,fluorine hydrogen bond forms,
               A single hydrogen bond is weak noncovalent bond but collectively  they exerts  very strong interraction.
             Hydrogen bonding occurs between complementary base pair .For exam An adenine base forms 2 hydrogen bonds with thymine base whereas guanine forms 3 hydrogen bonds with cytosine base.
              The hydrogen bonding between complementary is very much important to stabilize the structure of DNA .