Answer:consumers 
Explanation:because we are top off the food chain 
 
        
                    
             
        
        
        
An obligatory parasite is a parasite that can not complete its life cycle without exploiting a suitable host
 
        
             
        
        
        
Explanation:
The act of aspiring or ardently desiring; an ardent wish or desire, chiefly after what is elevated or spiritual (with common adjunct adpositions being to or of)
 
        
             
        
        
        
Answer:
Well for one photosynthesis gives out oxygen. This makes all animals able to live. So in that way it helps us and the world around us. Without photosynthesis we also could not eat food. No animals could live and no plants ould live. VERY IMPORTANT!
Explanation:
 
        
             
        
        
        
Answer:
Air is essential for all organisms