What was the first organism that released oxygen into the earths atmosphere?

The oxygen in Earth's atmosphere is mostly released by plants . . . both land plants and a huge mass of water/ocean plants.

Earths oxygen percentage is 20.95%.

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

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

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

More than 2 billion years ago, Earth's early organisms released oxygen into the atmosphere.

The most abundant gas in Earths atmosphere is nitrogen.

Stromatolites were the first on the list to introduce oxygen into the atmosphere.

The process that produces most of the oxygen in Earths atmosphere is photosynthesis. Plants use this process to create food.

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

Mostly nitrogen and oxygen.

Earths atmosphere is rich in Oxygen, some 21% of the air is Oxygen. There is oxygen on other planets, but the percentage comes nowhere close to this. The percentage of Oxygen in earths atmosphere is thought to have been much higher in the past, before animals were about, but after the arrival of plants.

Cyanobacteria is the first known organism to introduce oxygen into the Earth's atmosphere. This was accomplished through biological processes that occurred.

Plantae (plants)

Gasses found in Earths atmosphere.

what atmosphere is 75 km away from earth

yes, volcanoes react with the oxygen in the earths atmosphere and forms thick black clouds in th sky.

oxygen. it makes up about 20% of the earths gasses

Earths atmosphere is mainly made up of nitrogen and oxygen

Plants release oxygen as a waste product of photosynthesis.

Nitrogen is about 70%. Oxygen runs about 28%.

The free oxygen bubbled up from the oceans.

the approximate percentage by volume of oxygen present in earth atmosphere is 21%

biological processes

Nitrogen and Oxygen

Biological activity

Photosynthesis by plants

Growing more trees as trees take in carbon dioxide and releases oxygen that we use for breathing. So. I guess Afforestation provides most of the oxygen found in the earths atmosphere.

Nitrogen makes up most of our atmosphere. Second is Oxygen.

Oxygen makes up 21% of the Earths atmosphere.

Oxygen makes up approximately one-fifth of the Earth's atmosphere. The symbol for oxygen is O.

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

Plants, trees, and grass put oxygen into the air.

Oxygen, not quite Nitrogen makes up 78% of the earth's atmosphere.

Earths atmosphere is made up mostly of oxygen and carbon dioxide.

when photosynthetic bacteria first evolved.

IN earths atmosphere? oxygen hydrogen

maintains pressure balance

Photosynthesis.

Nitrogen and Oxygen

because we need it for oxygen and protection

nitrogen and oxygen

It is Oxygen.

Nitrogen and Oxygen

Nitrogen & oxygen.

Oxygen in the atmosphere is O2, two atoms of oxygen. Ozone, no matter where it is in the atmosphere or in a process, is O3, three atoms of oxygen.

Without its oxygen content the Earth's atmosphere would be composed almost entirely of nitrogen and would be chemically inert; oxygen causes the atmosphere to be chemically active (and breathable by humans).

Obtained by Earths atmosphere which is 20% Oxygen and processed by the aveoli (part of the lung).

Photosynthesis converts carbon dioxide into oxygen. Therefore, much of the oxygen in our atmosphere is present due to photosynthesis.

Yes, the earths atmosphere has around 20% oxygen, but less than 1% argon.