Propose suggestions of things that could affect specific heart structures that in turn cause a malfunction in the flow of blood through the heart or the body?

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

(nitrogen fixation) will be your answer sorry if im wrong