A scientist designed an experiment to examine the effects of exercise on respiration. He collected the volume of the gases produced by a group of people as they were running, walking, and at rest for 5 minute time periods. Which question can the scientist answer with his experiment? a Does decreased activity require a higher amount of oxygen than increased activity? b Does the amount of oxygen produced during physical activity depend on time? c Does the amount of time spent being active affect the volume of carbon dioxide breathed in? d Does increased activity lead to a higher volume of carbon dioxide produced?

Answer 1

The question that the scientist can answer with his experiment is: d Does increased activity lead to a higher volume of carbon dioxide produced?

This question directly relates to the effects of exercise (increased activity) on respiration, specifically the volume of gases produced (which would include carbon dioxide). The experiment's design allows for a comparison of gas volumes during different activity levels (running, walking, and resting), making this question relevant and answerable based on the data collected.