oxygen is made by which thing plz ans i will make brainlist
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Oxygen can be produced from a number of materials, using several different methods. The most common natural method is photo-synthesis, in which plants use sunlight convert carbon dioxide in the air into oxygen. This offsets the respiration process, in which animals convert oxygenin the air back into carbon dioxide.
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Processes That Produce Oxygen
Plants - Plants create the majority of the oxygen we breathe through a process called photosynthesis. In this process plants use carbon dioxide, sunlight, and water to create energy. In the process they also create oxygen which they release into the air.
Oxygen comes from massive stars that have fused these three components of the early universe into heavier elements like Oxygen. When these massive stars explode, they disperse heavier elements in clouds of gas and dust.
The dust and gas clouds that formed our solar system were enriched with material from earlier massive stars that had exploded. That's how oxygen came to be part of the earth.
Free oxygen in the atmosphere though, comes from photosynthesis. Oxygen is a very active element, it wants to combine with other elements. So the oxygen that was part of the earth's formation was in the form of chemical compounds like: Water, Carbon Dioxide, Silicates, Iron oxide, etc. it was almost never in it's "free" uncombined form. Photosynthesis frees oxygen that's combined with Hydrogen as Water, as Silem shows in his chemical equation. But for the first 2 Billion years the earth's early atmosphere had virtually no free oxygen in it.
So it took photosynthesis by living organisms to create the free oxygen rich atmosphere that we now have on earth. These organisms that first used photosynthesis are called cyanobacteria. They don't need oxygen to live they just produce oxygen as a by-product of their biological energy making process. Bacteria that don’t need oxygen are called anaerobic bacteria. Starting about 3 Billion years ago cyanobacteria began converting the earth's atmosphere from having no oxygen, to having the 21% oxygen we have today. This was called: "The Great Oxygenation Event" (GOE). Eventually other more complex organisms incorporated cyanobacteria symbiotically into themselves, these symbiotic cyanobacteria became the chloroplasts in plants, this is the part of the plant that actually carries out photosynthesis.
The oxygen the cyanobacteria produced was toxic to the other anaerobic life that was living on the earth at the time. There was a huge extinction of many of these other anaerobic single celled organisms as a result of the introduction of oxygen to the atmosphere. although some of these early anaerobic bacteria survived and are with us today. But it gave rise to other forms of life that use the atmospheric oxygen biologically to make energy, a process called “aerobic respiration”. One of the organisms that has benefited from this is us: humans.
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Plants - Plants create the majority of the oxygen we breathe through a process called photosynthesis. In this process plants use carbon dioxide, sunlight, and water to create energy. In the process they also create oxygen which they release into the air.
Oxygen comes from massive stars that have fused these three components of the early universe into heavier elements like Oxygen. When these massive stars explode, they disperse heavier elements in clouds of gas and dust.
The dust and gas clouds that formed our solar system were enriched with material from earlier massive stars that had exploded. That's how oxygen came to be part of the earth.
Free oxygen in the atmosphere though, comes from photosynthesis. Oxygen is a very active element, it wants to combine with other elements. So the oxygen that was part of the earth's formation was in the form of chemical compounds like: Water, Carbon Dioxide, Silicates, Iron oxide, etc. it was almost never in it's "free" uncombined form. Photosynthesis frees oxygen that's combined with Hydrogen as Water, as Silem shows in his chemical equation. But for the first 2 Billion years the earth's early atmosphere had virtually no free oxygen in it.
So it took photosynthesis by living organisms to create the free oxygen rich atmosphere that we now have on earth. These organisms that first used photosynthesis are called cyanobacteria. They don't need oxygen to live they just produce oxygen as a by-product of their biological energy making process. Bacteria that don’t need oxygen are called anaerobic bacteria. Starting about 3 Billion years ago cyanobacteria began converting the earth's atmosphere from having no oxygen, to having the 21% oxygen we have today. This was called: "The Great Oxygenation Event" (GOE). Eventually other more complex organisms incorporated cyanobacteria symbiotically into themselves, these symbiotic cyanobacteria became the chloroplasts in plants, this is the part of the plant that actually carries out photosynthesis.
The oxygen the cyanobacteria produced was toxic to the other anaerobic life that was living on the earth at the time. There was a huge extinction of many of these other anaerobic single celled organisms as a result of the introduction of oxygen to the atmosphere. although some of these early anaerobic bacteria survived and are with us today. But it gave rise to other forms of life that use the atmospheric oxygen biologically to make energy, a process called “aerobic respiration”. One of the organisms that has benefited from this is us: humans.
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