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How did oxygen come into the atmosphere according to evolutionists?
Wiki User
∙ 10y ago
Scientists agree that significant amounts of oxygen were first put into the atmosphere by cyanobacteria which used and still use a process called photosynthesis to convert carbon dioxide and water into sugar and oxygen. The sugar is then used to build cell walls and in the metabolism. When plants evolved, they too carried out photosynthesis, putting even more oxygen into the atmosphere. Prior to the evolution of cyanobacteria, the metabolisms of organism relied on anaerobic processes.
Wiki User
∙ 10y ago
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Where does the free oxygen in Earths atmosphere come from?
The free oxygen bubbled up from the oceans.
How did free oxygen come about in the atmosphere?
2.2 Billion years ago Photosynthetic bacteria in the ocean began churning out oxygen as a result of photosynthesis. Then, oxygen gas started accumulating in the atmosphere.
How would the atmosphere in your area change if a disease killed all the plants?
The atmosphere in an area where a disease killed all the plants would not have any or very little oxygen. Trees would still produce some oxygen.
What are the most prevalent gasses in the atmosphere?
78% of the atmosphere is Nitrogen, Oxygen is like 20% Then come the rare gases like Argon, Neon and helium but those are present only in traces.
How did oxygen become a part of earth's atmosphere and what did this increase in oxygen levels allow?
The majority of oxygen in the atmosphere come from photosynthesis. Aquatic Cyanobacteria (blue green algae) were the first known organisms to use photosynthesis, before there were land plants. The by product of photosynthesis is oxygen. This increase in oxygen eventually allowed organisms to use respiration as a method of energy production. Thus it allowed for land animals.
Where did the oxygen and ozone in your atmosphere come from according to this theory?
Oxygen when came in contact with UV broke down. It then reacted with more oxygen to form ozone.
Where do the oxygen atoms in the CO2 come from?
The oxygen most often comes from the atmosphere which is 21% oxygen.
Where does the free oxygen in Earths atmosphere come from?
The free oxygen bubbled up from the oceans.
Where does oxygen in water come from?
Water molecules are formed by the reaction between hydrogen and oxygen.
Where does the oxygen that plants release into the atmosphere come from?
It is the Oxygen from the CO2 and H2O tat they use to make sugars.
Where does the oxygen your body needs come from?
Plants produce oxygen through photosynthesis and release it into the atmosphere where we can breathe it.
Does air come from the sun?
No. Earth's atmosphere most likely originate from volcanic atmosphere. The oxygen is produced by plants.
How did free oxygen come about in the atmosphere?
2.2 Billion years ago Photosynthetic bacteria in the ocean began churning out oxygen as a result of photosynthesis. Then, oxygen gas started accumulating in the atmosphere.
Where did oxygen come from in the ocean?
It is diffused from the air, in the atmosphere, and from plant life in the ocean.
Where does the oxygen needed for burning wood come from?
Oxygen is part of the mixture of gases we breath. Therefore, burning wood uses the oxygen in the atmosphere.
How does oxygen occur?
If you mean how does it come to be in the atmosphere, oxygen is released into the atmosphere by plants, mostly by phytoplankton in the ocean. I you mean how is oxygen created in the first place, it is the result of lighter elements being fused together in the cores of stars.
Where does the free oxygen it the atmosphere come form today?
It is produced by the photosynthesis of plant life.
