1194803
Beschreibung
Quiz von ildasolha.jamari, aktualisiert more than 1 year ago
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Erstellt von ildasolha.jamari
vor mehr als 9 Jahre
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Frage 1
Frage
When we breathe in air, our body utilises the following gases:
Antworten
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Nitrogen, oxygen and carbon dioxide.
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Nitrogen and oxygen only.
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Oxygen only.
Frage 2
Frage
Plants only give out oxygen to the environment. It does not take in oxygen.
Antworten
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True
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False
Frage 3
Frage
What is the percentage of oxygen in the air?
Antworten
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1%
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21%
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78%
Frage 4
Frage
Why is it an advantage to have water vapour present in the air?
Antworten
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The water vapour makes the air moist and not too dry for us to breathe in.
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The water vapour breathed in will enter the digestive system to prevent thirst.
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The water vapour will be used for respiration in the body to produce energy.
Frage 5
Frage
Which statement is true?
Antworten
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Oxygen is the only useful gas in the air for living things.
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Nitrogen is the most abundant gas in the air but is useless to living things.
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Carbon dioxide exists in a small percentage in the air but is useful for living things.
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