How can oxygen be both an element and a molecule

Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is an element because it is made from atoms of only one element - oxygen.

Explanation:

is this for the e2020 class

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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