Well I will assume you are talking about the bird soooo...
Q3. The flycatcher
Q4. The trees in its forest
Q6. Yes and seasonal leaves from the tree might fall preventing from flycatchers hiding in the trees.
        
             
        
        
        
Answer;
Cell  
Explanation;
-The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
-Cell is the basic unit and building block of life. It is bound by a cell membrane, and possesses a nucleus which acts as its brain. Arachnoidiscus ehrenbergi  is an example of diatoms which are unicellular, therefore it is a cell. 
 
        
                    
             
        
        
        
What are the states below? I just did this unit in class, I might be able to help.
        
             
        
        
        
No, no look my shoes its gucci xd