Question

Observe the diagram of an activity given below What does it help to
conclude, when the person exhales into the test-tube
Lime water
(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 1

Answer:

b fermentation occurs in the presence of oxygen

Answer 2

Answer:

C) Percentage of carbon dioxide is more in the exhaled air

Explanation:

As human being inhale O2 and exhale Co2 and in this diagram lime water will turn milky because of the exhaled Co2 from the mouth of the person.