Absorption of heat by breaking down hydrogen bonds
        
             
        
        
        
Answer:
homologous 
Explanation:
<em>Since the front legs of a cat and the arms of a human share a bone structure that suggests a common lineage, these structures are said to be homologous.</em>
Homologous organs are organs that share some similarities in different organisms but whose function differ in these organisms.
The organs are structurally similar but functionally different. Homologous organs represent one of the evidences scientists use to support evolution.
The front legs of cats and the arms of humans are functionally different, even though their structure is based on the same five digit plan.
 
        
                    
             
        
        
        
Pardon? I don’t understand the question
        
             
        
        
        
Answer:
2, 6 are the one you should select
Explanation:
 
        
             
        
        
        
1) Diffusion and osmosis 
the diffusion of water through a semipermeable membrane is osmosis and the movement of particles from regions of higher density to regions of lower density is diffusion
2)The passive transport does not require energy and the active transport does ,this is what makes them different 
3)Endocytosis is a process for moving items that are outside of the cell into the cytoplasm of the cell. Exocytosis is a process for moving items from the cytoplasm of the cell to the outside.