Answer:
The cell pictured in the diagram is a plant cell because there is are chloroplasts. Chloroplasts are located in plant cells and not in animal cells. Chloroplasts are where photosynthesis occurs, and photosynthesis does not occur in animals. 
 
        
             
        
        
        
Because humans are omnivorous thus they can feed on different organisms. They can never occupy the lowest levels because they are not omnivorous.
        
             
        
        
        
Rotates? 
Ex: Foucault's pendulum is an easy experiment demonstrating the Earth's rotation. When Léon Foucault first performed the experiment in 1851, the concept that the Earth revolves was nothing new or radical; the pendulum's accomplishment was to provide a proof that did not require minute observations of the stars or other objects far removed from Earth. Foucault's pendulum is a highly localized, easily prepared experiment whose result is clear, powerful, and accessible even to the non-scientist. In short, the pendulum provides everything a science teacher could ask for in an instructional experiment.
        
             
        
        
        
A Group Of People That Work Together. They Depend On Each Other And Help Each Other Out.