oxygen

noun B2

Meaning

Oxygen is a vital chemical element that is essential for the respiration of most living organisms and is a key component of the Earth's atmosphere.
💡 A common mistake is confusing oxygen with ozone, which is a different molecule.

Example Sentences

How much oxygen do plants need to grow properly ?
Plants produce oxygen through photosynthesis during daylight hours .
The laboratory carefully monitored the oxygen levels during the experiment .

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