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Compare non-smokers’ lungs with those of smokers and note your observations.
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Observe the presence of tar by rubbing white tissue paper on the inner surface of the funnel.
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The amount of carbon dioxide is higher in exhaled air as compared to atmospheric air. Why?
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Which of the flask is acting as a control? Justify.
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Which compound is formed when limewater combines with carbon dioxide?
asked Oct 16, 2017 in English by sonia (36.5k points)
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The result you have noted is only because of the carbon dioxide
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In the lungs, the oxygen passes from the alveoli to the blood. What features make this process rapid?
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Does tidal volume increase when workload is increased?
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What are the factors that can affect the tidal volume and total lung capacity?
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How does living at high altitudes influence tidal volume?
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After vigorous exercise, your muscles, get fatigued, how it happens?
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What are the main differences in the composition of the inhaled and exhaled airs?
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The breathing becomes rapid and deep after exercise. Why?
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What is the stimulus of breathing?
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