Question

Name three processes by which oxygen from the air is used up

Answer 1

HEY MATE HERE IS YOUR ANSWER ✌

1) combustion

2) Respiration

3) In the formation of oxides of nitrogen.

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Answer 2

We need oxygen so that we can breathe easily and we get oxygen from the air because it reach to our blood vessels and it will then reach to our lungs and then carbon dioxide will come out automatically from our body and we can have oxygen. The three main process are photosynthesis, combustion and respiration are the process of oxygen cycle.