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Plants and trees

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Where does oxygen in the air come from?

photosynthesis


Where does most of the air huumans breath come from?

They come from plants. It is a cycle. (Carbon Dioxide and Oxygen Cycle) When you breathe out you realse Carbon Dioxide and the plants sucks it in and relase oxygen and that is what we breathe in.


Does air come from the sun?

No. Earth's atmosphere most likely originate from volcanic atmosphere. The oxygen is produced by plants.


What sources do oxygen come from?

air water trees


Where does the oxygen come from that reacts with the iron in a sparkler?

The air


Where does the oxygen atoms in H2O come from?

The oxygen atoms in water (H₂O) come from the air we breathe. When we inhale, our lungs absorb oxygen from the air. This oxygen is then used in the process of cellular respiration to produce energy for our body's cells.


Where do the oxygen atoms in the CO2 come from?

The oxygen atoms in CO2 come from the process of photosynthesis in plants. During photosynthesis, plants take in carbon dioxide from the air and water from the soil, and using sunlight as energy, convert them into glucose (sugar) and oxygen.


What is most of the air you breathe?

oxygen


Where did the oxygen come from when the Hindenburg exploded?

from the air around the airship.


What is oxygen most commonly found in?

Oxygen is most commonly found in the air of Earths atmosphere.


Where does the oxygen come from that you are breathing right now?

oxygen can be formed by the electrolysis of water, or by chemical reactions Oxygen is present in air, about 19% by volume, but it is not formed there. Most oxygen is naturally formed in green plants and algea by photosynthesis.


What gases make most of your air?

oxygen