Aperson who is overweight or obese is most likely at risk for which disorder?

sleep disorder

cognitive disorder

immune disorder

blood disorder

The answer to this question is all of the above. 
A person who is overweight or obese is most likely at risk for:
Sleep disorder
Cognitive Disorder
Immune disorder
Blood disorder

>Obesity causes alterations to immune functions. It may also affect the brain and would likely to contribute cognitive problems. Obese people have high risks to elevated blood pressure. They also sleep less compared to those who have normal weights. 

b. the carbon cycle ensures living things have a source of hydrogen

the answers are a and c