They are the link between the sun's energy and the organisms that cannot manufacture their own food. Without an abundant amount of autotrophs<span> we would be severely lacking in atmospheric oxygen and food.</span>
The most common types of cancer occur in AIDS patients are Kaposi's Sarcoma, non-Hodgkin's lymphoma, and cervical cancer (in women). AIDS patients are immunocompromised so that their immune system is weak. Therefore, the most common type of cancer in AIDS patients is liver cancer.