Answer:
either oxygen or argon, because they are both in the atmosphere
Explanation:
 
        
             
        
        
        
Answer:
Soil health is fundamental for a healthy food production. It provides essential nutrients, water, oxygen and support to the roots, all elements that favor the growth and development of plants for food production
Explanation:
 
        
             
        
        
        
Answer:  
anything contrary to the information provided below
Explanation:
Proteins determine the shape and structure of cells and the direction of almost all vital processes. Protein functions are specific to each of them and allow cells to maintain their integrity, defense of external agents, damage repair, control and regular functions, etc. selective binding to molecules. Structural proteins agree with other molecules of the same protein to cause a larger structure. However, other proteins bind to different molecules: antibodies to specific antigens, hemoglobin to oxygen, enzymes to their substrates, regulators of genetic expression to DNA, hormones to their specific receptors, etc.
 
        
             
        
        
        
The answer to 2-7 would be -5, but 7-2 would be 5, depends how specific one is trying to be. 
        
             
        
        
        
You just gotta do it no matter what happens