The primitive earth atmosphere is hypothesized to have consisted of?

Hydrogen,mathane ammonia and water vapor.

The primitive atmosphere was mainly composed of CO2. However, with the emergence of life, this CO2 was reduced in photosynthesis and increased Oxygen. Now our atmosphere is mainly composed of Nitrogen. ...

There was an ozone atmosphere on primitive Earth, but not an ozone layer which was formed further on. The primitive atmosphere on the surface of the Earth mostly composed by ozone was pushed upwards by the oxygen formed by dead organisms. That primitive ozone atmosphere on the surface of the Earth protected the forming microorganisms from the UV radiation. JamesWest09 ...

The primitive atmosphere was filled with hydrogen and had very little oxygen. It also contained ammonia and methane. This type of gas could not have supported human life. ...

Its titan , satellite of Saturn , having large amount of nitrogen and methane , same as primitive earth ...

There weren't any "primitive" earth conditions.

Oxygen was not found in the atmosphere of primitive Earth. It is so reactive that it became locked up in compounds at the time of Earths formation. These compounds were varied, but the bulk of them were mineral oxides, silicates, carbon dioxide and water. Free oxygen entered the atmosphere only after the development of blue-green algae, which produced oxygen from carbon dioxide. ...

After loss of the hydrogen, helium and other hydrogen-containing gases from early Earth due to the Sun's radiation, primitive Earth was without an atmosphere. The first atmosphere was formed by gases leaking out from the interior of the early Earth, which still goes on today in volcanoes. Without an atmosphere, life would not have formed. ...

Mainly by photosythesis that converted the CO2 in the poisonous early atmosphere, into oxygen. ...

It is hypothesized that plants derive from early photosynthetic protists, such as algae. ...

The atmosphere is above the earth.

Earth isn't in the atmosphere - the atmosphere is part of Earth.

There is not much atmosphere on earth

the atmosphere is the gases around the earth

The atmosphere. The atmosphere. The atmosphere. The atmosphere.

Yes, the earth does have an atmosphere. Part of it is the air you breathe. ...

The Earth atmosphere is formed from gases.

It has been hypothesized that the "first" object from earth the exit the atmosphere and enter space was in fact the moon. However, the first documented man-made object to enter orbit was the Soviet satellite Sputnik, in 1957. ...

The atmosphere of the planet Earth is gravitationally attracted to the Earth. That is what holds it in place. ...

earth has people in it's atmosphere

Gravity hold the atmosphere to the Earth. But other factors do cause earth to loose some atmosphere to space continuously. ...

It is believed that when primitive algae flourished on an early earth, they pumped out zillions of cubic kilometres of this gas. Before them, oxygen wasn't around in the atmosphere in very large quantities. After long, long periods of time, the percentage of oxygen in the atmosphere rose. It is to these early life forms that we owe the "air" and the atmosphere that supports us now. ...

The breakup of Pangaea, in other words - the current theory.

the atmosphere covers the earth like a blanket. the atmosphere surronds the earth with air. i enjoyed the restaurant because of its cozy atmosphere. ...

Without the atmosphere, there would be no life on earth.