The structures present in an organism will allow the organisms to do certain things. if the organism has a vacuole then it will be able to store water.
        
             
        
        
        
What passage carries food between the pharynx and the stomach?
Esophagus
        
             
        
        
        
While swimming, Frogs propell themselves, and their small legs act like a turbine, it sends water backward, so they get forward speed in reaction.
Hope this helps!
        
             
        
        
        
<span>When a virus enters the cell of a human body it can start hosting inside the cell and reproduce itself. A virus can easily affect the body at the same time the immune system would activate to fight the viruses. Medication is needed to prevent it from spreading and worsen.</span>
        
             
        
        
        
Both genes need to be recessive in order for a recessive trait to be expressed.
I hope this helps!