Which gas is used by living organisms for respiration? Where do they get it from? [2 MARKS]

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Solution

Name of the gas : 1 Mark
Source : 1 Mark

Living organisms require oxygen for respiration.
They get oxygen from the atmosphere. The envelope of air around us is called atmosphere and 20% of it is oxygen.

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Which gas is used by living organisms for respiration? Where do they get it from? [2 MARKS]

Name of the gas : 1 Mark Source : 1 Mark Living organisms require oxygen for respiration. They get oxygen from the atmosphere. The envelope of air around us is called atmosphere and 20% of it is oxygen.

Name of the gas : 1 Mark
Source : 1 Mark

Living organisms require oxygen for respiration.
They get oxygen from the atmosphere. The envelope of air around us is called atmosphere and 20% of it is oxygen.