Answer:
Less oxygen.  Less life.
Explanation:
Plants make up most of our oxygen here on earth, because of the carbon cycle and photosynthesis.  They take carbon dioxide, and turn it into oxygen.  And not only that, but some animals live in trees to protect themselves from birds and other animals. 
 
        
             
        
        
        
Energy is decreasing by 500 because some of it is turned into heat energy.
Explanation:
when an animal/creature consumes another living thing and or something that has energy it is decrease to a certain amount because some of the energy that the original animal/creature had is turned into heat energy because they use some of the energy for themselves to survive and live.
For example:
A flower is a producer because it produces energy and gets it gets eaten by a deer and some energy gets changed to heat and the other is consumed by the consumer (the deer) and so on.
 
        
             
        
        
        
Answer:
Proteins 
Explanation:
Generally just a guess so 
 
        
                    
             
        
        
        
Answer:
interleukin-2 (IL-2) is an interleukin, a type of cytokine signaling molecule in the immune system. It is a 15.5–16 kDa protein[5] that regulates the activities of white blood cells (leukocytes, often lymphocytes) that are responsible for immunity. IL-2 is part of the body's natural response to microbial infection, and in discriminating between foreign ("non-self") and "self". IL-2 mediates its effects by binding to IL-2 receptors, which are expressed by lymphocytes. The major sources of IL-2 are activated CD4+ T cells and activated CD8+ T cells
Explanation:
 
        
                    
             
        
        
        
China. Their country has been rapidly growing for years.
Have a nice day!