1. How might an athlete's vital capacity compare to a non-athlete? Is it larger or smaller? Explain your reasoning.

athlete's vital capacity is likely to be larger than that of a non-athlete. This is because athletes often engage in regular physical training, which can lead to an increase in lung capacity and overall respiratory efficiency. The increased demand for oxygen during intense physical activity necessitates a greater capacity for oxygen intake and carbon dioxide expulsion, leading to an expansion of the lungs and an increase in vital capacity.