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There are countless organisms that provide O2 for the atmosphere, all of which do so by photosynthesis, the chemical process of CO2+ H2O = O2 + CH2O + energy, which takes place in the chloroplasts of plants. Examples of mass O2 producers are trees, marsh plants, grasses, and plancton.

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Q: What are the two organisms that provide oxygen for the earth's atmosphere?
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Related questions

If Earths biosphere were younger we would have oxygen in the atmosphere?

Earths atmosphere dose have oxygen in it, without it we would all be dead we require oxygen to breathe.


How much of the earths atmosphere is made up of nitrogen and oxygen?

The earths atmosphere is made up of 78% nitrogen and 21% oxygen


Why did the amount of oxygen's in earths atmosphere increase dramatically?

The amount of oxygen in the atmosphere increased because the number of photosynthetic organisms, which release oxygen, on the earth dramatically increased. This lead to the Great Oxygenation Event, or the Oxygen Crisis, 2.4 billion years ago - when this free O2 entered the Earth's atmosphere.


Is most of the earths atmosphere covered with oxygen?

no


What percent of earths atmosphere is oxygen?

97%


What are the substances that the earths atmosphere contains?

oxygen


Was there oxygen in the early earths atmosphere?

yes


What types of organisms remove oxygen from the atmosphere?

Animals remove oxygen from the atmosphere.


Do trees provide the most oxygen for the atmosphere?

Yes, trees do provide most of our oxygen for the atmosphere


What essentials for life are found in earths atmosphere?

The Earths atmosphere protects the earth from meteors and it tgives us oxygen


What do scientists think was the of the oxygen in earths atmosphere?

It came from primitive organisms early in earth's history. They were the first organisms to use photosynthesis to make food, by using light to convert Carbon dioxide and water into glucose (food) and oxygen. Since oxygen is a waste product of photosynthesis, it was released into the air. As more and more of these organisms multiplied, large amounts of oxygen were released into the air, forming today's atmosphere.


What makes up Earth's air?

Nitrogen makes up 78% of the earths atmosphere Oxygen makes up 21% of the earths atmosphere