Answer:
hi there!!
Explanation:
It is gaining water because it is growing.
 
        
             
        
        
        
it allows for nutrients to come into the cell using passive tranport aka moving anything on a gradient without the use of energy (ATP).
 
        
                    
             
        
        
        
Food molecules contain chemical energy which is released when its chemical bonds are broken.
Food undergoes  digestion in the digestive system and is broken down into its monomer units. Carbohydrates, which are the principal source of energy, are broken down into glucose. Glucose is the monomer unit of carbohydrates.
Glucose then is taken up by cells and is used in cellular respiration, which involves three main stages namely glycolysis, Krebs cycle and the electron transport chain, through which a glucose molecule is processed to form at least 36 molecules of ATP. 
ATP is the form of energy that cells use.
 
        
                    
             
        
        
        
Answer:
Modern theory of evolution explains that "organisms change over time as a result of changes in heritable physical or behavioral traits". Hence this change suggests the loss of vestigial organs.
Explanation:
- Vestigial organ are those which do not have any function but is present in our body.
- According to the modern theory the genetic and physical appearance changes along with the adaptation in environment by the organism.
- So if the organ looses its function in order to sustain and adopt in the changing environment then they become vestigial and slowly disappear.
- This is the common example for the Lamarck's theory of "use and disuse".