Answer:
C. Regulate how much carbon dioxide a country can emit
 
        
                    
             
        
        
        
The answer is C. Either B or b
        
             
        
        
        
The answer is 60% are active
        
                    
             
        
        
        
Answer:
Aerobic metabolism is the most efficient way of producing ATP; it produces significantly more ATP for each molecule of glucose than anaerobic metabolism. Although the primary source of ATP in aerobic metabolism is carbohydrates, fatty acids and protein can also be used as fuel to generate ATP.
 
        
             
        
        
        
Cells depend on the body environment to live and function. Homeostasis<span> keeps the body environment under control which keeps the conditions right for the cells to live and function. Not having the right body conditions can result in certain processes and proteins won't function properly.</span>