The answer is the plant growth, because the dependent variable is what responds to the independent variable. 
        
             
        
        
        
Answer:
Yes
Explanation:
No matter what age, trees still give out oxygen. It may not be the same amount as an older tree, but it still has the same effect.
 
        
             
        
        
        
Answer: Matthias Schleiden
        
             
        
        
        
Answer:
S.N.	Characteristics	Viruses
2	Cell Wall	No cell wall. Protein coat present instead.
3	Ribosomes	Absent
4	Number of cells	No cells
5	Living/Non-Living	Between living and non-living things.
Explanation:
 
        
             
        
        
        
I think it’s d because it causes the greatest pull