Final answer:
The process described is known as drafting, which is crucial for the combustion process in fires by providing necessary oxygen for fuel to burn.
Step-by-step explanation:
The process of fresh air being drawn into the fire at a low level and feeding the fire is known as drafting. This is a crucial part of the combustion process in fires. When air is introduced, it provides the necessary oxygen for the fuel to continue burning. In the case of a fireplace, making it more energy efficient can involve having an external air supply for the combustion of its fuel.
The described process does not relate to breathing or respiration, which involves drawing air into the lungs and includes ventilation as a component, but in a physiological rather than a fire combustion context. Drafting in the context of fires is a form of natural ventilation that is driven by temperature differences, often enhanced by the chimney effect where warm air rises, drawing in fresh air from below.