C
Because your DNA is made of nitrogen bases
Adenine
Guanine
Cytosine
Thymine
        
             
        
        
        
Not sure so dont quote me on this but i believe it is producers and consumer.
        
             
        
        
        
 comes  from the earth's crust<span />
        
             
        
        
        
What does the problem says
 
        
                    
             
        
        
        
With sleep deprivation, the levels of leptin fall and the levels of ghrelin rise.
What is leptin ?
Your body secretes a hormone called leptin that aids in long-term maintenance of your normal weight. Your blood's concentration of leptin and how much body fat you have are intimately correlated. Despite the fact that your body has enough fat reserves, leptin resistance makes you feel hungry and make you eat more.
What is ghrelin ?
Small amounts of ghrelin are also released by the small intestine, pancreas, and brain. Ghrelin is primarily synthesized and released by the stomach.
To learn more about Ghrelin  click on the link below:
brainly.com/question/7747313
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