Question
Which gas is used by living organisms for respiration? Where do they get it from? [2 MARKS]
Answer:
:
Name of the gas: 1Mark
Source:1Mark
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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:
Name of the gas: 1Mark
Source:1Mark
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.
Was this answer helpful ?
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