Which of the following is an example of a disease that is properly matched with one of its environmental risk factors?
high blood pressure—genetics
arteriosclerosis—diet
hemophilia—poor nutrition
anemia—family history

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

that is wrong, its not thymus.