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∙ 12y ago
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Is there less oxygen today than 1000 years ago?
The atmosphere has the same amount of oxygen today as it did 1000 years ago. Although oxygen gets used up in various ways, through fire and through metabolism, oxygen is constantly being released into the atmosphere by green plants.
What is the oxygen content of the atmosphere?
The atmosphere is 79.9% oxygen.
Why doesnt the moon have oxygen?
The moon has no oxygen because it has no atmosphere.
Major gases of the atmosphere today are?
The major gases of the atmosphere are mainly nitrogen and oxygen. Nitrogen takes up 78.09% of the air and oxygen takes up 20.95% of the air. The rest is made up of 0.93% argon and 0.039% carbon dioxide.
Do trees provide the most oxygen for the atmosphere?
Yes, trees do provide most of our oxygen for the atmosphere
Today's atmosphere is full of nitrogen and oxygen These are?
gasses
Where does the oxygen in the ocean from?
In oceans, Oxygen gets dissolved in a very small proportion from the atmosphere. This process is very gradual. Oxygen also comes from the aquatic plants present in the water bodies.
What caused the proportion of oxygen in the atmosphere to increase?
Plants started to grow on the earth, plants breath in carbon dioxide (which is why it decreased so much) and they breath out oxygen. That is why the percentage of oxygen has increased so much.
How oxygen is your atmosphere?
The atmosphere today is about 21% oxygen. In former times it was different percentages. In dinosaur days, it was closer to 30%, which was a factor in animals growing as big as they did.
What elements make up today's atmosphere?
gases, primarily nitrogen and oxygen
How did the primitive atmosphere differ from atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
How the did primitive atmosphere differ from your atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
How did the primitive atmosphere differ from the atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
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.
Is there less oxygen today than 1000 years ago?
The atmosphere has the same amount of oxygen today as it did 1000 years ago. Although oxygen gets used up in various ways, through fire and through metabolism, oxygen is constantly being released into the atmosphere by green plants.
Why does earth have more nitrogen than oxygen in its atmosphere?
The atmosphere of Earth today is not the atmosphere that the planet started out with, the atmosphere has been produced by the biosphere of the planet. Originally the atmosphere was made of hydrocarbons, Carbon Dioxide and Nitrogen. Living things (using photosynthesis) have changed this by using the Carbon Dioxide to make sugars and releasing Oxygen as a waste product. The free Oxygen then got into chemical processes with minerals in the Oceans to make Iron ores and slowly the Ocean and atmosphere changed to include free Oxygen. Nitrogen is very inert and while it is slightly involved in life processes its proportion was unchanged by life. Therefore the composition of the atmosphere is a changing dynamic balance resulting from the nitrogen, and carbon cycles of the planet.
How much percent oxygen present in your atmosphere?
the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.
