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500 million years
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Do they have oxygen on the Moon?
No oxygen is not naturally present on the Moon. The Moon does not have an atmosphere to trap and circulate oxygen like Earth does. However there are some sources of oxygen on the Moon that are created by human activity. These sources include: Oxygen stored in tanks for use in scientific experiments Oxygen created by solar energy to split water molecules in lunar soil Oxygen created by chemical reactions from oxidizing materials on the lunar surface Oxygen generated by lunar landers rovers and other robotic probesHumans have been able to bring oxygen to the Moon but there is still no natural supply of oxygen on its surface.
Does Ganymede have an atmosphere?
It might have a tenuous (ie very, very thin) atmosphere made of oxygen and ozone, but as far as I am aware even that has never been proven.
Is there a planet that has oxygen other than Earth?
Probably. Small amounts of oxygen has already been detected on other planets (and moons) within our solar system, including:Saturn's moon RheaJupiter's moons Europa and GanymedeMars (0.13% of the atmosphere)
What amount of oxygen is on Mars?
While we would find it pretty thin breathing (and poisonous, to boot!) Mars does have an atmosphere, and there IS some oxygen in it.At its densest, Mars's atmosphere is only about 1% the density of Earth's and consists mainly of carbon dioxide (95%) and nitrogen (3%), with trace amounts of water, oxygen, hydrogen peroxide and methane having also been identified.Earth's atmosphere, on the other hand, is mostly nitrogen (78%) and oxygen (21%) with 1% being a mix of hydrogen, carbon dioxide and others.So you can see that Mars has much less atmosphere than the Earth does and oxygen make a proportionally much smaller fraction of of what there is than what we have on Earth.
Why is there no oxygen on Mars?
Every planet has its own atmospheric gases. The atmosphere around Mars is very different from our own here on Earth. Many scientists do believe that Mars had an oxygenated atmosphere at some point in its past. But now it is too thin, and too cold that far from the Sun. The atmosphere of Mars is made up of 95% carbon dioxide, 3% nitrogen, and 1.6% argon. The remainder is probably methane. The pressure at the surface is less than in the stratosphere on Earth. Oxygen is not thermodynamically stable in the presense of most other elements. If it's not continually renewed, it eventually combines with them. Any oxygen that may have been present in Mars' atmosphere has long ago combined with elements like iron to make iron oxide (prevalent in the soil of Mars) and carbon to make carbon dioxide (which makes up most of the atmosphere of Mars). The only reason there is elemental oxygen in Earth's atmosphere is that it's constantly being produced by plants. Mars would need an ecosystem, namely plants, which make oxygen by taking carbon from carbon dioxide. If Mars were closer to the Sun (warm enough for liquid water), and large enough to hold a denser atmosphere, Earth-like plants could grow there. But under current conditions, plants would require pressure domes, heating, water, and artificial light.
How was your atmosphere and ozone created?
Oxygen is carried in the solar wind, but mostly oxygen is produced by surface plant life. Nitrogen was expected to have been part of the initial ancient atmosphere, and is non-reactive (and heavy) enough that it is still present. Ozone is made from oxygen and sunlight.
How did the oxygen in the atmosphere get there?
The oxygen in Earth's atmosphere has been generated, over geological time, by the plant life on Earth.
Was the atmosphere of the earth always mostly nitrogen and oxygen?
No, the Nitrogen in the air has probably always been there (because nitrogen is rather inert), but originally Earths atmosphere was reducing (it had no free Oxygen) and probably contained large amounts of CO2 and hydrocarbons. The present atmosphere on Earth is the product of biological processes which have slowly introduced free Oxygen into the Oceans and then the atmosphere - life made Earth habitable for life!
How long has the oxygen concentration of the atmosphere been at its current level?
The oxygen concentration in the atmosphere today (which is at about 21%) has been at its current level for the past 400 million years.
How did Earth change about 2.5 billion years ago when many organisms began using photosynthesis to make food?
The amount of oxygen in the atmosphere increased.Until then carbon dioxide had been present in huge quantities in the atmosphere, while oxygen would have been extremely rare. Photosynthesis uses up carbon dioxide and releases oxygen so the proportion of oxygen would have increased dramatically, paving the way for oxygen-breathing life-forms.
Which substance was not present in Earth's primitive atmosphere?
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.
What is your atmosphere made of?
Don't even used or pollute because the pollution can affect our atmosphere. so that the atmosphere become bad or dissappear .. That's my teacher said . this answer i have in notebook :) so I hope i can help YOU !
Why do you not find hydrogen as an element in the air?
It's there, it's just not present in any significant quantity. There are two primary reasons for this: # Hydrogen is very light; light enough that at Earth temperatures the molecules are moving fast enough to escape Earth's atmosphere. # There's a lot of oxygen in Earth's atmosphere, and hydrogen reacts readily with oxygen to form water. Taken together, it means that most of the hydrogen present has just been generated through some chemical reaction and, statistically speaking, is either on its way out of the atmosphere or about to react with oxygen.
What planet has a nitrogen- oxygen atmosphere?
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.
What make up most of the gasses in the atmosphere?
Whe considered on a dry basis (water vapor removed) the atmosphere is made up of nitrogen (78%), oxygen (21%) and argon (1%). These numbers have been rounded somewhat and other elements and gasses in the atmosphere are present at in part per million levels. As an example carbon dioxide is present at 300 ppm (approx) or 0.03%.
Did the primitive Earth have oxygen?
No. Oxygen is not believed to have been present in the early years of Earth's history.
Which was least likely to have been a component of earths atmosphere before life began?
oxygen
