Observe the diagram of an activity given below. What does it help to conclude, when the person exhales into the test tube?
A. Percentage of carbon dioxide is more in inhaled air.
B. Fermentation occurs in the presence of oxygen.
C. Percentage of carbon dioxide is more in the exhaled air.
D. Fermentation occurs in the presence of carbon dioxide.
Answer:C
Observe the diagram of an activity given below. What does it help to conclude, when the person exhales into the test tube?
A. Percentage of carbon dioxide is more in inhaled air. B. Fermentation occurs in the presence of oxygen. C. Percentage of carbon dioxide is more in the exhaled air. D. Fermentation occurs in the presence of carbon dioxide.