Answer:
C. Makes energy in cells
Explanation:
Nitrogen has the role of making energy in cells of the human body.
 
        
                    
             
        
        
        
The major difference between viruses and living things are that most living things can reproduce independently, whereas viruses must infect living cells in order to reproduce. The correct answer is C. 
        
             
        
        
        
A benign tumour is generally not dangerous as they grow usually within a membrane in one space. They can however grow really big in a short space of time and can cause pressure on neighbouring blood vessels which can be dangerous. 
Metastatic or malignant tumours are dangerous and cancerous. After they grow, some cells break off and travel in the bloodstream to a different area of the body (usually the main organs) and forms a secondary tumour there. This keeps happening until the cancer has spread to all of the body. 
**_hope this helps**
        
             
        
        
        
I believe it's the the decrease of owls and if i' wrong sorry 
 
        
                    
             
        
        
        
A refute hypothesis is a hypothesis that has been refused, not accepted.
When a hypothesis is refused, the scientists that proposed it will try to correct it or to create a similar more applicable one, and that is how new investigations could occur in this case.
Hope it helped,
BioTeacher101